Move smoothly from run time to social time with the Amphipod R3 Express Convertible Pack! This performance waist pack combines bounce-free stability, comfort and perfect phone storage. Switch up your look with a stylish conversion to a no-fuss everyday crossbody bag. Lightweight and durable, the Amphipod R3 Express Convertible Pack takes you from your run straight to a night out with friends! Designed to take you from your run, straight to a night out with friends 1.1L storage volume -- holds the largest phones, nutrition, keys/cash/ID and more Converts from bounce-free waist pack to crossbody pack (super versatile) Premium, fully-lined and moisture-resistant nylon construction Integrated R3 Stretch-Fit™ strap technology maximizes comfort and stability Durable and lightweight, ultra-comfortable and cushioned Sleek seatbelt webbing strap design with easy-clasp low-profile buckle Adjusts to custom fit 21" to 50" waist sizes Large internal pocket with key fob and divided area for phone Breathable 3D air mesh back panel eliminates sweaty hot sports Internal pocket sports our fun "Run.Relax.Repeat™" woven tag.