I little harder to get into the Salomon Adv Skin pack, because the bottom is "flat", rather than pointed, like the original flasks. I love the long straw with angled mouthpiece. Much easier to use.

I bought these bottles mainly for replacing Nathan marathon original bottles which came with the vest. These were super easy to clean and really easy to refill on my marathon runs since most of the organizers are encouraging people to care refill bottles over use and through cups. The only thing I would have liked is little more long tube to access. Otherwise great product.

Have only run twice with them but they seem to be well made, drain and dry easy, don't seem to have the dreaded plastic flavor and most importantly, fit my Salomon vest which was the whole point.

Great soft side water bottle.Fits nicely and can squeeze Into many pockets.The bite top makes it easy to not deal with taking tops on and off.I Bought 2 of them.Great for skiing.

First time using a "collapsible” bottle; how does it collapse again? Maybe I’m not doing it right, but the bottle just seems to sag into a shapeless blob and doesn’t exactly collapse as I think that word means. Use it in left pocket of a 3L vest; bought an extended straw but that ended up smacking me in the face whenever I move LOL. The normal cap and bite valve worked well, altho I found the valve to be a bit sensitive to the slightest squeeze. Anyways, can appreciate using this as opposed to…

This thing is awesome and the only time it has ever leaked even a drop? I fell down on my chest pocket where it was and my whole body squeezed it. Otherwise it’s super cool and convenient and cleans easily

I liked the product but the bottle where you screw hot deformed after two uses. I will now need to replace the bottle or return item.

Zero weird plastic taste like other bottles have. It worked perf for reducing weight from my big bladder in the back of my pack and put it to the front for a backpacking trip. I love the ease and single handed use of a bladder and bite valve and i wanted to still have that while putting my water weight in front! This did the trick! I was able to use the long straw attachment and half the time i forgot it was even on my front strap. The only thing I’d like to see offered is the neck of the water

Just another trash product being sold on ebay. I bought the flasks for trail running and liked that I could use the extended straws, but water leaks everywhere soaking my pack, jacket and shirt. I'm so tired of the trash companies with their garbage products!

I got 2 or the 500 ml. They’re long and skinny and don’t fit snug in any hydration pack. I got one of the 600ml and that fits perfect in all my packs. I wish I had gotten 2 of the 600ml.