KUREIDA Hydration Bladder 2 Liter, BPA Free Water Bladder for Hiking Backpack Water Storage Bag with Insulated Tube, Hydration Backpack Replacement for Outdoor Camping Running Hiking

Good value, no leaks

These hydration bladders are amazing! They fit my Sojourner bag perfectly and have little to no taste at all. My previous hydration bladder that came with the Sojourner bag was undrinkable. I washed and checked both bags for any leakage and they were both in great condition. The screw opening is large and makes it very easy to fill with ice and my hand fits in easily to clean. I like to fill it by keeping the opening flat and, if possible, the rest of the bladder should also lay somewhat flat. I found that this way allows you to fill it as much as possible and it definitely fits 2L of water. The fact that it came as a 2-pack makes it all the more worth it. The tubes have a neoprene type layer over it for insulation, but I feel like it didn't do much in helping my water stay cool from the sun. It didn't really bother me or anything though, I just blow the water back into the bladder when I'm done taking a sip. Overall, great hydration bladders for a great price.

For the price, great product and in my second year using it.

I have had this for a year and still using the first bladder (blue one). I use primarily on the longest runs (15 miles or more) with AONIJIE Hydration Vest Backpack 5L. Impressed that no leaks developed so far. However, I do find though - and especially when I used for the first time in a marathon this month - that the flow is slower and more difficult to suck than desired, especially when I am pushing my limits already in terms of effort, breathing, etc in a marathon. So if the tube were large diameter and one could get a bigger gulp or two rather than trying to suck so many times to get quick larger sips at once, it would be ideal. Other approaches Kureida might try is to provide compression sock of sorts around the tube so that it has a small amount of pressure (so again, one doesn't have to suck as hard and the flow is there) or perhaps use larger diameter tubing. I was unable to find Kureida's contact info to provide this feedback. By the way, one key learning too: after filling but before a run, bleed out the air by turning upside down and sucking the air out. Otherwise, running with the bladder and a big pocket of air results a lot of fluid sloshing around and makes the bladder bounce around on your back. If you bleed it out first, the bladder will settle fairly quickly after .5 miles and you forget it is there. So again, harder to use when under duress but I expect to use more for extended bike rides.

Great replacement bladders. Easy to fill and leak proof. Durable and easy to use. Great price for two of them!