Nalgene Ultra Deluxe 32oz Bottle Pack - Shoulder Sling Cool alternative to a fanny pack for anyone on-the-go Comfortable and adjustable shoulder sling works very well Nice accessory pocket is perfect for storing a small bottle, a book, your keys, your wallet, or your iPod MP3 Player! Even has headphone cord port! Extremely sturdy and rugged, yet light weight design Nalgene's premier bottle pack, in a cool and stylish design!