Amazon.com: NATHAN SPORTS: Bladders。Brand new with tags and sealed drinking spout Unisex Designed with the runner in mind, the Limitless Sling fits on either right or left shoulder and includes a removable strap that fits around the torso to ensure a no bounce run. They also have many pocket options to ensure there is room for your phone, valuables, and essential gear. BOUNCE-FREE RUN The main crossbody strap that can be worn on either shoulder, combined with the secondary removable strap that can be worn around the other side of your torso for a no-bounce run. MORE DETAILS, MORE STORAGE Multiple pockets for all your storage needs whether you are on the go every day or out for a run. The compression helmet flap on the main storage compartment features a drawstring opening that provides maximum room for storage. FEATURES Includes 750mL flask & hose Front: 5mm foam shoulder strap for comfort Stretch stash pockets for glasses or nutrition Removable Strap for left or right wearing Additional run rtrap (with clip) removable when not using for running - built for a bounce free run Main compartment features drawstring closure to adjust and maximize storage Helmet compression flap designed to secure and compress load. Daisy chain for extra storage attachment Back of body zipper for valuables (phone, keys etc.) Side zipper for easy access to main storage pocket. Weight with flask: 9oz/255g Weight w/o flask: 6oz/170g