Hydration Bladder 2L Leakproof 2 Liter Water Reservoir, BPA Free Military Green Water Storage Bladder Bag with Insulated Tube, Hydration Backpack for Outdoor Hiking Camping Running Cycling

Nice quality, easy to fill and clean. Bought another.

Great bad, water flow is always good and mouth piece is comfortable and durable. Design and color are awesome, cleaning is easy as long as you detach hose and mouth piece. This lets water flow through and easy to rinse

Bought for running London Marathon last year. It has been one of the best hydration packs I've ever bought it is so easy to use, fits in most rucksacks, easy to clean.

This is a great hydration bladder that fits well into my 45 litre rucksack, it comes with all the clips you need to attach the drinking tube to the straps of your bag. It has a cap over the mouth of the drinking tube and has a push pull mechanism to open the valve. What they don’t say is that after you pull the end to drink you won’t get any water out unless you bite down gently on the end. Took me a bit to work that one out firstly thinking it was air locked. But got there in the end. I also bought the cleaning kit and cleaning tablets for it, after all no point in having additional water if it’s contaminated after a few uses. Verdict: highly recommended

The bladder did not leak, the mouthpiece also sealed well even when open but was easy to use, and it worked well for my purposes. The only downside is that the hose is quite stiff and thick, particularly with the fabric wrapping, so the hose is a bit unwieldy to arrange in your pack, and its dark colour makes the hose water get warm fast. Overall happy with it though.