As a frequent walker & water drinker I need a water bladder that would hold 3 litres. The btwin water bladder did just that and was very cheap. At first I had problems with the flow of the water from the bladder down the straw, water wasn't flowing very easily so drinking was proving very difficult but once I adjusted the bladder in my rucksack it worked perfectly!
Really pleased with this replacement water pack. Really well priced, easy to fill and reliable. Placing the tube into a backpack is not the easiest, and the tube could be a little longer. Otherwise a great product.
Easy to fill, not too fiddly
Tube not the easiest to pull through