Review on BPA-Free PEVA Hydration Pack Bladder - WACOOL 2L/2Liter/70Oz Or 3L/3Liter/100Oz Capacity, Leakproof Water Reservoir by Christopher Kanter

Super easy to empty and clean due to the top coming off! I've used mine several times on hiking trips and did not have any issues with leaking, but I will say that if you're using a hydration bag with a hook instead of velcro for your bladder holder, this does have a tendency to slip off. The o-ring came off after several uses, and the seller stood by their product and sent me a new one. Very classy move, and I'll certainly be buying from them again in the future.