Synopsis:
GOOD ON DELICATE CLOTHES!
Assembly is straightforward but requires a bit of effort
The unit is made with sturdy plastic and I can't imagine what people are doing with them to make the stand warp.
The crank of mine came cracked, but trying to replicate the damage was impossible for me to do by accident and the seller replaced the part immediately.
It's easy to use and super lightweight
Kind of big, but if you are going to be hand washing a lot of things, it's only a bit bigger than a 5 gallon bucket but the whole point of the thing is for it to do a better job at washing clothes than just swishing them in a bucket so you can't have it both ways.

Details below!

So I have a hobby of collecting and wearing niche alternative fashions that are heavy on delicate printed fabrics and lace (hello fellow EGL fashion enthusiasts!) and over the course of 2020 I basically threw out all my jeans and t-shirts and decided to wear my dresses as just my regular clothes. But I ran into the problem of needing to hand wash everything. I spent all summer washing things every day in my sink and I never felt like I was rinsing things good enough. Filling and emptying the sink constantly was a chore, too. But the final straw came this winter. Hand washing became painful as the water from my sink was too cold to submerge my hands in for too long so I had to find another solution. Where I happened upon this miracle!
I will address some of the things I read from reviews in order of when I remembered them while working with my own unit.

1. Assembly
I found the mini washing machine rather easy to assemble, actually. I was expecting it to be a trial, but the directions are really straight forward with nothing more complicated than "attach the two side triangles to one of the middle-connectors, then stick the basin into the holes, then connect the second and final middle connector". The hardest part was putting in the little pegs to cover and secure the holes that connect the pieces, but that was less an issue of understanding and more of strength. It WAS hard to get them in there.
2. Unit Durability
I saw a lot of people talking about how when they used the washer, the plastic seemed thin or warped and it bent while moving. While I did not experience this while using the mini washer, even cranking it at high speeds with a heavy load, the handle DID arrive to me with the knob on the end cracked. But when testing whether or not this was something I could have done on accident, I found that it was actually pretty difficult to press on the cracked part enough to move the cracked pieces and that this was likely a damage that occurred in shipment.
I contacted the seller and they IMMEDIATELY sent me out a replacement!
3. Ease of Use
For context, I am 4ft 7-8. I am not very strong or active and my endurance isn't great. I am a young person, but I am relatively weak. I found this unit incredibly easy to use. Not only is it lightweight enough for me to carry around, but turning the crank for 2 minutes is hardly a chore. If my arm starts to get tired, I simply switch arms, and the task isn't strenuous enough to make rest a necessity. It's less work than arm circle workouts because once you get the washer going, momentum does half the work.
4. Storage
This is one thing that IS a little rough. This thing is pretty big for me because I am small, but I think it's a reasonable size for what it is. It's a five gallon drum that lets you turn a crank to wash your delicate clothes better than just hand washing in your sink. You can't have it be a five gallon drum that you crank to wash your clothes WITHOUT it being a 5 gallon bucket on a stand. It's impossible to get something like this to be smaller while still remaining functional and anyone who doesn't take that into consideration would probably buy a horse and get annoyed that they can't fit it inside their studio apartment. Like. Yeah. It's a HORSE.

5. Drying
This does not dry so you still have to wring it. Wringing stuff isn't difficult or even messy, just roll it up in a clean towel. It's going to be wet just like if you hand washed it, it does not have a spin cycle.

All in all, I love it! It's turned laundry from a chore into a satisfying job. It handles my expensive delicate clothing very very well and stops me from having to touch water so cold my fingers hurt.

I love this little washer. It never beeps at you because it's 'out of balance', no electronic sensors to go bad, and it won't shake your house. And it's just very satisfying to use for some reason. I don't recommend using the drain pipe it comes with to empty out the water though. I put mine in the bathtub and just flip it over to empty the water out the main opening when I'm done - much easier. It pairs well with one of this company's other products, the Ninja spin dryer. Takes about 2-3 minutes to wash, 3 more minutes to spin 90% dry, then put your clothes on a dryer rack to finish the job.

I had an opportunity to use this machine for 3 weeks during a camping trip in which we used it hard and frequent. It worked excellent and I had no issues. But I would like to augment my review by responding to the review below me...specifically the cons in which I had a totally different experience.

Cons:
* The machine is basically made of plastic. The manufacture says that it's made of the highest, most durable plastic, but at times the brackets do seem a bit wobbly. The washer itself seems sturdy. The base is questionable. Some of the small screw caps did not stay in place, but they are not essential to the unit staying together or washing properly.

It is completely sturdy and mine did not wobble at all. Perhaps the reviewer did not set it up correctly as the machine needs to be put together properly. They say plastic as if that is a bad thing, but this makes it lightweight and many things are made of plastic and sturdy...take a look at your car next time you're in it.

* Can be messy: Washing clothes in this unit is not the tidiest of processes. I initially tried it in my kitchen, but I spilled more water than I used, so I eventually move the unit to my bathtub and found that it fits perfectly and I don't have a problem with water being everywhere.

It can be, but ours was not. This point is the fault of the reviewer and NOT the machine at all. Make sure you put the drain tube on correctly and into a sink and put the cap on tight and no issues.

* No assembly instructions: The unit does not come with a lot of instructions on how to put it together, but it's not that difficult to figure out. You are really only assembling the base not the tub. You really can look at the pieces laid out and see how it all fits together. It took me less than 10 minutes to unbox and assemble.

Now this one is ridiculous to me. I have heard others say this. I have put together Barbie stuff for my neice harder than this. There are about 5 parts in total, I could have done it without ANY instructions at all. I seriously have to laugh...if you can screw in a lightbulb you can do this. Of course, we now need warnings on hot cups of coffee so one does not burn themselves... seriously...c'mon.

* Where the suction?: The unit does have suction cups for stability, but I have to say they stick the best when you don't need them to. When the water splashes, the suction cups tend to not stay in place. However, I've found when using the unit in the bathtub, this wasn't an issue. The unit did still slide around a bit but not enough to disrupt the washing process.

This one makes sense. It does sometimes stick when you need to move it but you just pull up on the suction cup edges and wala! But I get his meaning here...it is true.

* Bait and Switch: When I received my Wonder Wash I was surprised to find they sent me a Sputnik 3 that looks exactly like a Wonder Wash, but was renamed. I hadn't seen anything on their site claiming they renamed the units, so I was a little suspicious. However, the unit seems to do what the Wonder Wash claims to do, so I kept the unit. I can, however, see how other reviewers see this as a bait and switch and question the quality of the Sputnik 3 compared to the Wonder Wash. I can only speak for my unit and say that so far I haven't had any problems. I do think the manufacturer should really clear this up or stop sending out the Sputnik 3s as Wonder Wash.

I have heard this before as well and it did not happen to me. I cannot comment therefore...but mine was the Wonderwash. Make SURE you ask the seller first to send you the Wonderwash or do not buy it.

* Hard to Crank: When I first started using the unit, it was at times hard to crank. But, through trial and error, I found that the amount of water you use for the size of the load is every important. The instructions say that the smaller the load less water is needed, but I didn't necessarily find that to be the case all the time. I eventually found that over time you will be able to determine what the right clothes to water ratio is to make it crank smoothly. The right amount of water in the unit can make the cranking action effortless.

Not really. I agree if you are 5 years old but it is NOT hard to crank.

* The Tricky Lid: The lid for the machine can be a little tricky. It's almost like working with a child-proof cap to get the right fit. The trick is to unscrew the lid all the way until you almost take the screw out. Place the lid on the unit and lock the lid in the groves around the unit. Hold the lid in place around the groves and then tighten screw back all the way down. By doing this, you get the tightest fit and therefore the most pressure and fewer leaks. When you loosen the lid after a wash, you should hear a hissing sound of the air releasing, then you know you had a good tight fit.

I am shaking my head. This should not be a con at all. It is not really like a child proof lid but you have to turn it and then screw it. But this is also childsplay and very simple. But I agree, if you are a 5 year old and you want to do this get someone to help you first.

* No Spin Cycle: Since this is not your typical washing machine with a spin cycle you will need to either ring your clothes dry by hand or do like I did and buy an Spin Dryer Centrifugal Clothes Portable Spin Dryer. As stated before I'm lazy when it comes to laundry, so wring out the clothes after washing would have been deal breaker in buying a Wonder Wash. The Spin Dryer completes the Wonder Wash.

Lazy is correct. Did you see Kenmore or GE written on the side of the unit? How about in any of their ads? Where was it written that this thing ever had a spin cycle? Nowhere...

So why out this in the cons? That's like buying a a minivan and then scoring it lower because it is not able to do 0-60 in 3 seconds. It was never promoted not sold to have a spin cycle so I am not sure why anyone has it on their list. Yes, wring out the clothes...it takes a few minutes but so what. Do not buy a manual machine if you are lazy. But I suppose lazy and cheap are a bad combination.

This is a great machine and we were happy with it. I expected to not like it considering some reviews and especially the one I quoted here...I am sooo happy I never listed. it saved us money whiloe camping and was extremely convenient if we were staying at a campsite for at least 2 days.

5-year PREFACE:
In January of 2020, I will pass the 5 years of usage point. This Wonderwash is still one of the greatest purchases I have ever made. If you read past the preface, you get the entire story. I wrote my first review after 1 month followed by an Addendum after 1 year. I thought I should come back to give this update... I'm still cranking & my clothes need less detergent to get clean. At some point, between 1 & 5 years, my rinse water started running clear after the detergent removed the dirt. I don't ever need to wash twice now; nor do I need to soak as much. I generally do let the detergent & softener rest for about 10 minutes then crank for 1 more minute. However, I'm no longer dealing with old stains & buildup so my clothes are cleaner. Bonus: they look better too... like new again. I love my Wonderwash!!!

ONE MONTH REVIEW:
Stains are fading! I've been using it for approximately 1 month now and I've noticed the stains in my dishcloths and cloth napkins are fading away! My clothes seemed to be looking better but I thought it was my imagination until I noticed & watched those specific stains. I guess it's the smaller loads or something? Whatever! It works better than the standard washer I was using... And it's Eco-friendly! Win-win!
If you were wondering about ease of use... Be sure to measure the water, per the instructions, and away you go. I do switch arms to keep the workout balanced... Generally, 2-3 loads each day I do laundry; alternating arms by day, not load. Once you get it going it's 100% aerobic...but EASY! The water gets flowing & it is almost self-propelled; if you feel like you are struggling you have too much water or clothing... Or you didn't get it going fast enough, crank faster. Once you get the speed right, the water seems to do most of the work. Just remember not to smash the clothes in too tight and you should be fine. [When you drain the water, if the clothes fill more than half of the washer... you got too many clothes in there!]
As for drying, I use the Nina Spin Dryer - also from The Laundry Alternative. They are a perfect match. By the time I finish another load in the Wonder Washer, letting it drain for a while between cycles, the prior load is almost done hang-drying. I let the rinse drain until the first load dries, then I spin dry and hang. It makes the process almost relaxing. A friend stopped by while I was washing & was amazed that things hang dry as fast as his big electric dryer can dry things. He was also amazed at how much fit inside the washer...looks can deceive.

ADDENDUM:
Now that I have used the washer for a year, let me just say that my clothes like the gentle treatment! Stains don't last, fabrics have smoothed out, and the things I have purchased since buying it still look like new... it's like a front-load washer only MORE gentle!
I see that they have updated the lid, which I think is a great idea. The first time my daughter used mine she didn't get it closed all the way cuz my old style lid requires many turns to tighten/seal it... she spilled water everywhere. But just once!
I have oiled it once but it is squeaking here & there so I will probably have to oil it again soon... making oiling necessary about twice a year. I haven't had to replace any parts but they are all available from The Laundry Alternative. It was super easy to put together [when it arrived] and replacing parts that break instead of buying an entire washer is another bonus.
I have to admit, I do 3 cycles most of the time. I do the detergent cycle, a white vinegar cycle, and end with a softener cycle. I crank each cycle for the 2 minutes they recommend for washing. I count 120 cranks; as the cranks take about 1 second each. That's 6 minutes of cranking per load. [Super dirty stuff gets extra rinse water thrown in WHILE DRAINING & comes out clean.] I also alternate forward & backward cranking, not just left & right arms, & my arms look GREAT! Just thought I would throw that in.
I should add that I am enjoying the exercise factor. It has gotten so easy to crank that I love doing laundry! I also find that the rest of my body benefits from the isometric exercise; holding the rest of my body still while cranking has toned me from head to toe...And my clothes look great on my toned self; more bonuses!!!
One year later, still cranking & loving it!!! ^_^

Looking at the picture I didn't exactly expect to get a bunch of plastic pieces that I had to assemble, but that's what I got. It wasn't difficult to assemble the pieces and it's sturdy enough to be used but just barely. As long as you don't plan on moving it around a lot, this will do just fine. If you were hoping for something a bit more solid and sturdy though, you might want to reconsider. The drum itself (where you put the clothing and water) is of decent construction, but the legs seem to be less than ideal. What's more, you can't easily disassemble it once it's put together so you're better off putting it someplace out of the way, but still accessible to a drain.

As I said, it didn't take me long to assemble the pieces but one of the pieces left over puzzled me and still does to this day. It looks like it's supposed to be a cap over something but it doesn't appear to fit on ANYTHING on the device. It doesn't seem to be crucial for its operation so I just left it off. If anyone figures out what it's for though I'd like to know just in case it might somehow improve the performance of this thing though that's doubtful). EDIT: it was a cover for the drain inside the drum. You put the cover over the drain to keep clothing from plugging the drain.

Anyway, it seems to work best when situated near a sink (for the drainage) and filled with a few gallons of warm/hot water (but no hotter than what comes out of the faucet normally). Unfortunately it's not big enough for a REAL load of laundry, but if all you need is a handful of shirts or undies, or a couple pair of pants washed and nothing more, then this saves you money in terms of water and electricity used (or coins spent at the laundromat).

The agitation of the water is done by a hand crank which flips the drum over and over from top to bottom and back again. I suppose the cleaning power depends entirely on how dirty the clothes are, how much water you used, how much detergent you used, and how long you're willing to sit there turning the crank. I've tried it on some heavily soiled clothing and it came out no better or worse than if I had put it in an actual load of laundry, but with the benefit of using less water so I don't feel as bad if I need to put it through an additional wash cycle.

Once you're done you can attach the little pipe to the bottom which pushes a spring-loaded plunger out of the way allowing the water to drain. Then you can remove the pipe, throw in a couple gallons to rinse the wash off, and crank it a bit more. Unfortunately you don't get to spin-dry so you'll need to wring out your clothing before hanging it up to dry somewhere.

If you have a working washing machine and need to do large loads of laundry for the whole family, then you're probably better off doing the wash like normal. However, if you're in a situation where your loads of laundry are too small to do a load in the washer or if you have some clothing that might be damaged by a regular machine, this is probably a much better alternative.

I'm one of those people who doesn't need to wash more than a few articles of clothing at a time, so this is perfect for me, though as I said before, the plastic construction on the legs makes it feel a bit cheap and prone to break. Just focus on not putting any sideways stress on it and make sure the feet have a good flat surface to attach to for the suction cups and it should work just fine for many washes.

I gave it 4 stars mostly for the compact nature and being able to do small loads of laundry without having to get my hands wet. I expect that my results will improve as I learn more about the limitations of the device and much I can pack in there before the cleaning power diminishes. I subtracted one star mostly for the cheap plastic legs which may pose to be a problem in the future. If the legs break, then it immediately becomes much harder to use so I feel like they should have put some metal reinforcement around the frame of the legs, or made the plastic thicker.