1.5/2/2.5/3L Hydration Bladder, 2pcs Water Bladder, Leakproof Water Reservoir for Hiking Biking Climbing Cycling Running Camping Backpack, Blue and Army Green

My kids have used several of these on a few trips and outings and they work well. No leaks or issues so far!

Nice set. They fit good in military surplus 3 liter carrier backpacks. Only wish both were green.

These worked great for Mountain biking I just wish they came with items to clean the tubes and bags. Great price

love the water bladders

Not easy to dry

I have one hydration backpack but wanted to carry one for myself as well as my son in just one bag. I cleaned and filled each pack halfway then froze them. When it was time for our hike, I poured water over the ice and the water stayed cold the whole time! One color-coded straw fed over each shoulder strap!

I've had the big-name bladders and these 'cheapies' and they both seem to last the same amount of time (I mean they all will leak at some point). I really haven't found a difference in longevity though. Well, that's not true. The difference comes when you FIRST fill it. The pricey bladders never leak on first use, while the cheapies -occasionally- leak right out of the box. I guess it's a Q.C. issue. So, test it before the big day comes to see if you got a loser. Or, better yet, with the money you save buy a few extra bladders to cover any 'surprises'. The $40 bladders do offer a more Cadillac experience... better mouth pieces, slicker attachment methods, shaded hoses, etc. But on a one or two day hike you won't notice those slicker features. What you will 'notice' is a dang leak!! And my experience is that after a cheapy bladder passes the in-home initial leak test, they last as long as the pricey bladders. Your mileage may vary. :)

These are amazing. We used these on a 7 mile hike and they did not leak. Had space for phones and a snack. Super comfortable to wear and easy to adjust.

It leaked the first time I tried to fill it. Don't waste your money.