OspreySiskin 8L Men's Biking Backpack with Hydraulics Reservoir, Slate Blue

Took this pack to Europe. Was the right combination of functionality, size, and water.

Just the right size. Best feature is the webbing between you and the pack than minimizes the annoying sweat buildup between you and the pack

I’ve only used this pack for hiking and it’s fantastic size for a short day hike. Has plenty of storage room for the things I usually take such as snacks(protein bars, granola, bananas), wallet, keys, battery bank. The 2.5 liter hydration pack is a great size. This past summer I just filled it with mostly ice and it would keep my water cool for the 3 hours+ in the sun. I like that the tubing is magnetically attached so it doesn’t fly around.The one thing I didn’t like is the bite valve started leaking after the first week. I believe this is an older model because when I looked up a replacement the new ones have a physical valve to keep it from leaking when not in use. I did replace it with that one and got a valve cover as well. It works fantastic and I’m satisfiedOverall great product and fits my use case.

Very small format but holds a lot of water and a lot on supplies.Very happy.

Easy to fill, lots of cool features like helmet strap, lots of storage, easy to clean. Beats Camelback hands down.

We love Osprey hydration packs in our family. They offer so much quality for the price. We do day hikes or even biking and it works great.

I have really nothing but good things to say about this bag. Spacious, comfortable, light weight& stylish. The hydro pouch has a high flowing valve which is excellent when you need to quench that thirst fast. Aces!

Ok thought at first that the thing was leaking, I was so disappointed. Then I realized I was a good, and was pressing on the mouth piece with the full weight of the backpack. The piece works as intended. You need to bite down to get liquid, so it's not the fault of the backpack at all.I would suggest if you are concerned about the thing leaking, buy the small mouth cover piece. I don't use it, but I make sure when putting the full bag on my back seat, to not have it lay on the mouthpiece.

This is the second one I’ve bought. Got it for my son. I’ve used mine for a year now and nothing but pleased. Enough water for a couple hour mtb ride and lots of quality zippers/ storage for essential gear such as snacks / spare tube etc. material and general quality highly recommended

Ottimo zaino idrico,leggero e capiente con un’ottima ventilazione per la schiena

This is great pack for mountain biking. I also use for short hike.