At first I thought soft flasks were a giant stride for trail kit, but I fell out of love with the Salomon ones. On paper, they are fantastic - there's no swooshing sounds or bruised ribs from hard bottles and they are super lightweight - but I had problems with them leaking. They leaked all over my rucksack, car seat and down my clothes. Even without pressure. Plus, they only fit inside the Salomon sack, which I also gave up on. Granted, they were designed for the Salomon pack, but even when using that, one fell out during a run and I didn't notice. They're not exactly cheap, so you definitely don't want to loose any.
When I bought the Ultimate Direction pack back in September, I stuck with the bottles that came with the pack. It might take a bit more work to get the fluid out of the kicker valve, but they're 100% leak proof. They're not just great for runners, but for kids too! Especially if you've got one like mine, who spills everything and leaves juice bottles leaking on the back seat of the car.
But they still swoosh - and I have noise issues! - so when I first saw the design of the Ultimate Direction Body Bottles, I was quite excited. They've taken what's brilliant about soft flasks and perfected them with a hi-flow bite valve.
I was expecting great things from them. And after trying them for the first time at the weekend, they did not disappoint. Ultimate Direction have rekindled my love of the soft flask. The technie bit...
Material: BPA-Free TPU Clear - you can see how much fluid is left Collapsible - is only as large as the liquid being carried Pliable - conforms to any shape Cleanable - can be placed in dishwasher Cap - Hi-Flow Bite Valve