I bought this so that I could use it for gels when running. I've tried it on a training run and it worked just fine with the SIS Isotonic gels. Design: A soft flask will collapse as you drink, which saves space. They're often easier to drink out of too. That being said, not everyone likes a soft flask, which is why we've included some hard bottles too.

Dehydration means your body loses more fluids than you take in. Here are some of the symptoms to look out for, especially in the summertime: It’s not unusual for a highly active person to lose up to two litres of water via sweat during a workout. To prevent dehydration, the fluids lost need to be replenished. The best way to do this is to listen to your body and drink water when you feel thirsty. You should also drink water before, during, and after any physical activity. What to look for in a running water bottle Grip: One of the main features of the products below is that you don't have to grip the bottle itself. Instead, the bottle attaches to your hand to let you carry on running as normal. We've also included some belted options. It's a simple piece of kit, but choose the wrong type of bottle and you'll end up with an aching hand from having to grip, or water spilling everywhere from a leaking valve. Obviously, you don’t need to carry litres of water with you, but it’s a good idea to have water with you on a warm, or long run, and drink to thirst.UltrAspire bottles use a BPA -free LDPE for our running bottles, which is preferred over PP for most sport applications because of its hand feel and squeeze-ability. (We know what it’s like to be a fatigued runner in the later stages of a long race trying to squeeze an impossible bottle!) We also use Tritan, when squeeze-ability is not an issue and stability is preferred, and Silicone, both of which, have great taste quality.