FITLY Soft Water Bottle | Shrink As You Drink Soft Flask for Hydration Pack | Folding Water Bottle Ideal for Running, Hiking, Cycling, Climbing & Rigorous Activity

I’ve bought other bladders from this company before, which have lasted for well over a year (still going) and recommend them to friends. They’re really light weight and are great to fit in your pocket when snowboarding or in a small bag when out and about. I’ve never had any issues with leaking and although initial they do have a funny taste (not too bad), that quickly goes. This one seems much the same - bought for running as I hate carrying part empty bottles - these reduce in size as you drink, so there is never air in them. The holder seems weak made and fits well. I love the pocket at the front - great for keys and a bank card for emergencies.

This fits perfectly in my pocket and doesn't leak (you have to kind of bite down for the water to come out) Took one star off as it doesn't have cap/cover so all the fluff from inside my pocket stuck to the mouthpiece.

I was impressed with how it felt on a run, fit my hand well (glove size 9) and the extra pocket is great for small things like keys and inhalers, or Gu.(better than things jingling in a pocket). Using is great and it's easy to take occasional sips without breaking a stride. Reflectors on the straps and side are a nice touch. Doesn't leak or drip. Bit of a funny "new" taste but better with some soapy water and a soak in mild citric acid. I'm sure it'll go with use (edit: it has) Ideal for 5-10k ultras.

Bought it for a holiday, but it made the water taste horrible. I just couldn't get rid of the rubbery taste.

The 350ml soft water bottle is a good size to store in your rucksack. Easy to use, lightweight and didn’t leak. However, whatever I do to remove the rubber smell and taste, does not work. Even if you use a strong tasting squash to dilute, the rubber taste is overpowering. They are not usable, buy something else.

Love this bottle, great when your out running, easy to carry and leak proof, great condition and value for money.

Easy to carry when running and very useful in hot weather when I don’t want to use a running vest. It would be good to get some spare tops with it as I think the top will wear out quickly.

One of my favourites, ideal size for electrolytes on a run and fits well to the off brand running vest.