Gregory3D Hydro 3L Day Hiking/Hydration Water Reservoir

The tube is long enough for me, the bite valve works really well, it's super easy to fill because of the "3D" design which also makes it easier to dry than any other pack I've ever had. No plastic taste that I can detect which was a huge problem for my on my last two packs. Build quality seems very good, no leaks from the pack, filler or hose. Three liters is a big upgrade from two for hikes in Summer Arizona heat. The built in hook on the bottom is very useful for hanging the pack to dry, and the no-leak quick release allows me to remove and fill the pack without having to thread the hose back into the pack and straps, and I can pre-fill the pack and store it in the refrigerator over night without the hose flopping around in the fridge. I also appreciated the minimalist recyclable cardboard packaging

Took this hydration reservoir on a hiking trip in Chile, and it was absolutely fantastic! The design is super user-friendly, with an easy-to-fill opening and a secure, no-leak bite valve. Even after hours of trekking in different terrains, it held up perfectly—no leaks, no weird plastic taste, just a reliable water source on the go.I also love how the 3D shape helps it dry faster after cleaning, which is a big plus compared to traditional hydration bladders. The durability is impressive, and it fit well in my pack without sloshing around too much.If you need a solid, well-designed reservoir for hiking or travel, this one is a winner. Highly recommend!

I have had multiple brands over the years and this, easily, is my favorite one. Pretty straight forward. I’ll freeze some water overnight in it at the angle that doesn’t block the hose outlet, fill it up and use it! Easy to use, I like the magnetic adapter to keep the hose in place. When I clean it out, this is what I REALLY like. The sidewalls are just stiff enough not to collapse. This is a big deal for getting it to dry properly. Had a hook to hang it upside down.If you have looked at every single one on the market and can’t decide - go ahead and get this one.

Works great. Couple years in and no leaks. Handle makes fill easy. Definitely need to take a paper towel to finish drying around seams to get completely dry, but that’s any hydration pack.

My old one started leaking, so I bought a new one. Just days after the 30-day return window expired, it started leaking. What use is a backpack that you can't even put in the car's trunk or frunk? I have to carefully carry it on the back seat floor in case it randomly decides to leak more water out.This product is so cheap feeling as well, all the connection points seem like they used the cheapest possible components. Buy some other manufacturer that has better quality control. Hopefully Gregory will give me a replacement, but I bet it'll just leak again.

Great hiking bladder. I was looking for an affordable quick option for water while hiking, and I am very happy I bought this one. It is very easy to use, has no leaks, and is very durable. The design is option as it fits in many backpacks and the little magnet attachment for the tube is amazing for keeping it in place.

Easy to fill, no leaks around the cap or bite valve. Seems to be built better than the Camelback it replaced.

This was a nice replacement for my 15 year old water solution that should have been replaced a while ago. The opening is great and it fits well in my existing daypack.