Salomon Soft Flask

While the Salomon Soft Flask doesn't make the same nifty noises as a bendy straw, it comes awfully close in the super cool department. This soft water bottle compresses as you suck in fluids and won't leak when you cram it into your pack. You've to bite on the spout before any water comes out. And, given that it comes in three sizes, you'll be able to stay sated whether you're walking the dog or hiking in the heat of summer.