I'm going to reference capacity capabilities of the size medium (rust/orange) ALPS Mountaineering Compression Sack as the subject of my review. I find that when shopping for gear on-line, that relying on product descriptions alone sometimes makes it hard to select the size(s) that you need. So I hope this helps.

I purchased this bag for compressing clothes for backpacking, kayak camping, and to compress winter clothes in our airline luggage for our snowshoe trips. So for my example I have selected clothing for what one might use for a very plush 3-5 day Autumn backpack trip or car camping trip. Typically, die-hard backpackers aren't going to be bringing the bulky heavy items I've used here, but I selected them for the sake of the example. (Even with everything I placed in the sack, there was actually room for a bit more.)

Shown is the compressed sack which measured 10" x 15" and weighed 6 1/4 lbs. Then the contents of the unpacked sack, which were as follows:

1 pair - lightweight women's jeans
1 - Merino wool blend base layer long sleeved shirt
1 - lightweight quick-dry type shirt
1 - long sleeved thermal style pajama shirt (bulky)
1 pair - sleep shorts
1 - cotton T-shirt
1 pair - lightweight quick-dry shorts
1 - Polartec fleece jacket (super bulky)
1 - Bandana
2 pair - Underwear
3 pairs - Socks (2 light hiking, 1 medium hiking)
1 - Stuff sack pillowcase

The last photo is the compression sack in the mesh stuff sack it comes packaged in. Its a pretty nice mesh bag with barrel and drawstring that could be used to organize items inside the compression sack, or used elsewhere.

The quality of this compression sack seems very nice, compared to others I've used over the years. The material, straps and buckles all seem very rugged, and everything is sewn together nice and sturdy. The zippered pocket on the end is a nice little luxury feature to stuff small items that you may want to keep handy (I used it to stuff away my pillowcase). I pulled the straps pretty tight for the example, and I saw no areas of stress that gave me any impression that the bag would fail.

I'll be sure to update my review with any future issues that may or may not come along.

This compression sack has proven water resistant and durable. The clips are strong, so you can really crank down on them for maximum compression. We used them for boon docking trips where available space is minimal. We bought 2 in different sizes and would definitely buy them again.

This is the best stuff sack I have had. Probably have 8 or 9 others. But this is by far the best one I've come across

Good quality, fast delivery

I enjoy camping, and for better or worse, have owned a large sleeping bag for around ten years which offers a lot of versatility in the way of zipping and unzipping layers for various temperatures, a hood and more, but unfortunately, packing and unpacking it has been another matter entirely.

I've tried many bags, straps, and compression bags over the years, and with yet another camping excursion on the horizon, I thought I would again try to search out a a better storage solution, and after reading reviews, ended up purchasing the ALPS Mountaineering Compression Sleeping Bag Stuff Sack in Extra Large: XL, 12" x 25", XL Winter Sleeping Bags. On the plus side: it's better than what I was using previously, but not by much.

The set came with the compression sack itself as well as a small black mesh bag for storing the empty compression sack, which was handy. Probably the best aspect of this particular sack is how well it is made. The fabric is nylon ripstop and it held up to a lot of pushing, pulling, and abuse without giving way. The seams are also double-stitched with bar-tacked stress points, and one end has a handle with D-rings, while the other has a small zippered pocket and D-rings.

When you receive the sack, you'll notice that you have what basically looks like a regular compression sack that has been sewn into a flap attached to four cinch straps that end in another flap to cover the reverse end. In short order, what you're supposed to do is to stuff your sleeping bag in the inner compartment, cinch it closed, and then stretch the four cinch straps over the other end and tighten them to form a compressed sack. In practice, however, this did not go easily for me, which I completely blame on the fact that I have an absolutely ginormous sleeping bag. It took me almost 25 minutes of non-stop frustration to finally get the bag completely stuffed into the sack, but after that point, things went very smoothly and I was able to tighten it off without any problem.

The resulting pack was very nice and compact, and I liked that the actual sleeping bag itself felt fully-protected and portable.

All-in-all, even with the frustrations I experienced, I really can't fault the bag itself, and am actually planning to order a smaller version of the same bag to put my pillow and some of the attachments for my sleeping bag in, because I figure it's better using two bags to fit everything in than continuing to struggle each time I go to pack mine up all at once. ;) So as long as you have a more reasonably-sized sleeping bag, I would definitely highly recommend this sack. While my package didn't come with any sizing suggestions, here is what another reviewer said their had listed:

- Small, 7" x 16", Clothes, lightweight bag
- Medium, 9" x 20", Compact 20 Degree bag
- Large, 11" x 23", Most Mummy Bags
- XL, 12" x 25", XL Winter Sleeping Bags

I am a longtime Amazon Prime customer who enjoys writing reviews in my free time. If you have any questions or comments about this product or my review, feel free to message me and I'll be glad to help!