HydraPak Force (2L Or 3L Hydration Reservoir) - Ultra-Durable Water Bladder for Hydration Pack – Insulated Tube & Dust Cover, Self-Sealing Bite Valve, Leak Proof, Fully Reversible Dishwasher Safe

I did my first hike yesterday with this bladder in my Camelbak Hawg backpack. I have always only used Camelbak bladders in the past so thats what I have to compare to. Heres my initial opinion: Pros: Seems to be be spillproof. I filled it full and left it on the counter in several positions to test it. No water leaked from the top nor from the tube attachment at the bottom. The drinking tube is covered with a tough plastic material that will protect it, & maybe add some insulation. Once you figure out exactly where to bite, the water flow rate is pretty good. The bite valve has a snap-on dust cover. It seems pretty secure but several times, it came a little loose. Could end up being a problem if the cover keeps gettting looser with use. Easy to clean with the top opening and ability to turn it inside-out. Cons: The drinking tube is 1-2 inches too short. You have to bend your head down to drink since the tube is not long enough to bring all the way to your mouth (with it through the retaining loops on the shoulder strap). The top wont stay open while filling and requires keeping one hand squeezing the opening while pouring with the other hand (awkward). However, this tightness probably helps keep it spillproof. No on/off valve on the drinking tube. I like the security of knowing the water cant go past the valve, esp. when I have it full but not in the backpack (like in the fridge overnight). Why couldnt they have added this simple item like Camelbak does? Im not convinced yet that this HydraPak bladder is better than my Camelbak military bladder. If they could lengthen the drinking tube & add the on/off valve, it probably would be. *2-Year Update: I just found out that this bladder actually has an on/off valve. They sure made it counterintuitive and hard to use, though. A fellow hiker showed me how-You have to forcefully turn the tiny ledge on the end of the black piece, just before where you put your lips. I had tried this previously but it didnt seem to turn off at all and I didnt want to break it. Now I know how. The bladder is still holding up very well, no leaks whatsoever, even at the the disconnect to the tube. My only remaining complaint is that the drinking tube is too short. Highly Recommend!

I bought this product to replace the bladder in my high Sierra backpack. It fits well and appears to be durable.