The Ultimate Direction Access 10 Hydration Waist Pack is light and breathable so you can comfortably run with your smartphone, keys, and some snacks. Its Cool Wick Air mesh provides ample amounts of breathability to keep you cool and comfortable, and a bit of ripstop keeps everything together for a long time without adding weight. The straps offer a secure fit, and elasticated holders store the loose ends so you don't run with them flapping around. The Access 10 features a semi flexible, angled bottle sleeve that allows you to take the included 10 ounce bottle in and out with ease while you're running, and the sleeve has a TPU backing to prevent the bottle from slipping out. Ultimate Direction made the bottle out of BPA free polyethylene, and equipped it with a leakproof cap for your convenience. The main compartment can store your smartphone as well as a few extra snacks. If you want just a touch more pack space, check out the Access 20 Hydration Pack.