HydraPak Stow (1L, 32oz) - Collapsible Water Bottle - Ultralight & Packable Travel Bottle, Flexible Ski, Hike, Bike or Climb Squeeze Flask - Sutro Green

This was purchased to replace the SECOND flexible water bottle that had leaked or broken. The previous water bottles were the more foldable material. This one has been incredibly durable and has been used and abused at Disney World, Coachella, and then on a 3 day backpacking trip on the PCT. It’s less lightweight than the others I have had, but the durability is more important to me now. It’s also very packable and flexible. My dad loves it so much I’m ordering a second one for him for Father’s Day. Awesome product!

My wife and I each got one to use during our 9 days around Europe. We filled them up in the mornings so we weren't without water between mealtimes. I loved the flat and flexible shape that could easily fit into the side waterbottle pocket of my Travelon backpack. Never once worried about it bursting as it feels well made like the water bladder of a Camelbak or Hydroflask backpack. Having it out in direct sunlight for extended periods of time will make your water warm though since it's pretty translucent.

If you are looking for a foldable good quality bottle, this is it. I did not find any rubber smell upon arrival but be very careful on what fluid you keep in the container cos it retains the smell for a long time.

I LOVE this water bottle. It smooshes into any handbag or pocket and rolls up super small when empty. Doesn't leak. Thus far have used it walking the dog, going to work, and out sailing. My new go-to!

This hydrapak is amazing -- I'm a rock climber, and I've put this thing through the ringer. I attach it to my harness by putting a carabiner through the sturdy built-in loop (along with all my other sharp gear, but it doesn't pop), and it's great because it doesn't leak at all and it gets lighter/more collapsable the more you drink from it. Perfect for my adventures. I've taken it on climbing trips to Mexico and the Black Hills with this thing hanging on my harness on multipitches and chimney climbs where I'm literally squishing it with all my body weight against sharp rock totally expecting it to pop, but it survived! And it doesn't negatively impact my climbing. On my most recent trip it finally popped a teeny hole at the top; it's still usable but sounds funny because you're slurping in mostly air to get to the water, but I intend to patch it and expect it to be completely fine. But for $19, I'm so impressed that it didn't pop sooner, and the price makes my decision easy to buy a spare.Some people in other reviews complained about the water tasting funny in it -- I never noticed any issues with that. Granted, sometimes when you're adventuring you don't have access to water that tastes to one's liking anyway, and I'm not super sensitive to that as long as it doesn't taste awful. As the sun hits the hydrapak, the water starts to get warm and maybe adopt a slightly "off/stale" taste, but it didn't bother me at all. I am super impressed with this collapsable water bottle!