Good idea and much more affordable than many alternatives. The medium (43") was a good size for our rat terrier puppy, who is about 8 lbs. I think it would also work for a larger dog, up to maybe 25 lbs. The fabric was a lot thicker than expected, and the roof is a great addition for jumpers and climbers. The carrying bag is also convenient and the fact that it folds makes it easy to transport.

The main problem with this is it is not for active puppies (which in my experience, is most puppies). Within 2 minutes of being put in it, our pup is trying to rip the netting, and collapses the pen in on herself. If we pop it back out, she proceeds to pull it in and collapse it on herself again. We even put toys in it for her, and she would still rather play with the zippers and netting than the toys. She also slides the whole pen all around the floor, even if we try to brace it against the wall. It has stakes so it might work better for outdoor use.

I purchased this for kittens who were just learning about the world but did not have their momma to keep them safe when I was away. It was great for 4 kittens who were being bottle fed and therefore needed a little bit of containment during the day. They felt safe and secure but were able to test out their legs a little and stretch out when they were first learning how to walk. They continued to enjoy being in there even when they were older. I would leave the two doors open and they would run in and out and sleep in there. I recommend it for anyone fostering babies who needs a nice place to leave them when you have to leave the house. Very helpful product.

I purchased this Pet Playpen for my 3 1/2 lb. Shih Tzu/ Maltese Diva while traveling to visit family for a couple of weeks. First of all I purchased it through Amazon Prime and it arrived in less than 48 hours . As soon as I got it I opened the package and popped it right up in 3 seconds no assembly required. I put one of her favorite blankets inside and Diva went right in and started having fun immediately. The Playpen is very sturdy and well constructed. However, I think it's worth mentioning that it is made for a pet that is calm and is not going to to mind being closed in. I highly recommend this product. I am so happy with it because it's so portable and comes with it's own carrying case. Diva now has a little home away from home !!!

I like this so much, I'm writing my first review. We recently acquired a Yorkie puppy, and needless to say we can't let her have free run until she is 100% housebroken. I initially purchased this with the idea of keeping her in it when we visited at my daughter's home in Tampa. It worked out perfect, as it not only kept her off their carpet, but since it has a top that zippers on to the top of it, it kept all the visiting children from picking her up. I had not even thought about using it at home since we have an area set up for her with her crate in it. Since she's an "only dog" she would get lonely and start crying when I had to work in my office or cook in the kitchen. Then I remembered the doggy pen and it's working out perfectly. Now she can be safely in the room I'm in, and I don't have to worry about surprise puddles or her getting into mischief. It folds up quickly and is easy to move about. I just put a pee pad in one side and a few toys on the other, and as long as she can see me, she's perfectly content. The carrying case is also nice, as I can stuff a few toys and her blanket in it. Images below...I submitted the images right-side up, have no idea of why they are showing upside down:P

We also have the same playpen in large. We have 2 rescue yorkies that absolutely fell in love with their large playpen, but due to the large playpen size sometimes if just needing to bring it outdoors or to a friends it can be a bit bulky. So we decided to add on and go with the small one too, the only wish I had is that it was higher. Our girls believe they are human and love to lay on soft pillows in the playpen so it makes it easy for them to jump out. As you can see even as we are having s vinyl privacy fence put up for our babies to run one is always close by to her bed. This was a great addition perfect size for our girls to nap in, our girls are 10 & 12 lb dogs if that helps out.