Wow I love this bladder. For the longest time I have been looking for a good bladder but the ones at the stores where so expensive and I didn't really want to spend so much money. The bladders that sell at the stores are so small and they cost so much, this bladder is holds up 3 liters of water. There a couple of things that I really like about this bladder a d they are that its a 3 liters, it is camouflage, and the actual straw has a cover so it is isolated. This bladder fits perfectly in my back pack. I think I will have to buy a hydration back pack because they are lighter than the back pack that I have now. The best part is that I won't spend a lot of money because I have the bladder. I received this product discounted in exchange of my honest review.