Marmot made its Kompressor Zip Water Bottle for mountain training and endurance sports like trail running so you can carry just the essentials during your workouts. Bigger than a pocket but smaller than a pack, the nylon ripstop zippered pouch is strong and durable yet lightweight for long lasting comfort. Its compression strap secures the pouch to the 16 ounce Hydrapak water bottle, and you can remove the pouch for easy cleaning. This zippered pouch features one stash pocket for keys or gels, and a main pocket for your wallet or a highly compressible windbreaker. The Hydrapak water bottle conforms to the shape of your hand in order to give you a good grip for extra comfort, and it features a silicone soft bite to prevent spilling and a twist cap to eliminate leaking.