It's light and fits over the pack well, is definetly waterproof. Even with care and tape on the end of the picket and a helmet on the outside of pack. Got 4 small abrasion holes it looks like or rips. I will take on more weight to have a cover that can will last more than one trip

She Rails

Tacoma, WA

This is a solid raincover; my only minor issue is that, on the Atmos AG 50, the hood of the pack cover slightly interferes with the load lifters. No serious functional impairment, just a bit awkward. But - this cover will fit a 50 liter pack, but no more. So, since Osprey pack volume can vary slightly depending on size (small, medium, or large), be sure you use the actual volume, not the number in the pack name, to select your cover. The salesperson who sold me my size large Atmos AG 50 thought the Medium pack cover (35-50L rating) would work. However, the size large is actually a 52 liter pack, and the medium would not fit a fully loaded size large pack (but would fit a small or medium.)

Glenn

Southwest Ohio

Used it on some long backpacking trips in multiple countries as well as overnighters here at home. It can resist high patagonian winds and stay on your pack without worrying it will fly, water resistance is good. The downside of it is it tears easily if snagged.

FM123

Quebec, Canada

Ripped the very first time it encountered a twig. Very disappointing! I wish it had a warranty of some sort.

Em

Utah

The XL cover is not big enough for an Aether 70 with a Thermarest Z-Lite SOL (accordion style) sleeping pad mounted horizontally to the back. I tried mounting it vertically, and could barely get one of the pack's back straps around the pad even though the pack is far from stuffed and has only 30 pounds in it. The cover barely got around the pack. Pretty frustrating, especially since the Aether Owners Manual shows the pack with this style sleeping pad attached to it.

Ellen Go

San Diego, CA

It does it's job well and is super compact, but it really needs some reinforcement on the bottom. A backpacker is always going to set their bag down at times, and the bottom of mine got shredded way too quickly. Granted, I was in rough country up in the Sierras where it's all granite, but it should not have gotten cut up so fast. Be careful when you put it down.

Clayton the Troutslayer

Los Angeles, CA

It is very lightweight and packs down to the size of a fist. It is 100% waterproof. I used it in heavy rain and nothing got wet. Easy adjustments with elastic drawstrigs. I have a Volt 75 and the large raincover fits it well with still some room to cover things attached to the pack.

Nicholas

Montréal, Québec, Canada

Solid accessory. Lightweight construction with a good waterproof membrane on the material. Packs up pretty small in its own pocket. Reflective logo on the front so people know who you carry. My only gripes which are smallish ones and sort of depend on the user. If you plan on carrying a tent or pad on the outside of your pack, you'll want a larger sized cover to go over those extra pieces of gear. If you're using the cover on a pack at the maximum size, it will be difficult to strap anything else on the outside of your pack. But that allows you to learn to pack more efficiently. The material is of great quality but it does tend to snag on branches and rocks. A couple holes here and there after 6 uses is no big deal. I just slap a little Tenacious Tape on there and call it good. Lastly, the rain cover does not cover the area between the pack and the user. That frame area is exposed and I have found water to find its way into the main compartment through this spot. No Rain cover is entirely waterproof but if you're worried, I would suggest a pack liner of sorts for extra protection. Overall, I really liek the color and reflective tones and the lightweight pack protection for most wet weather. I would defintely buy another one in the hi Vis style for Bike Commuting.

Peter_Piper_Pizzazz

Portland, OR