For runners who like to go fast and far, the Amphipod Velocity Plus™ with AirStretch Belt is the perfect choice. This versatile waist pack also features a larger zippered section to carry large phones or nutrition products if necessary. The 20 oz bottle sits flat at the back inside the ergonomically designed pouch featuring a breathable AirFlow™ mesh to help keep the sweat at bay. The lightweight and bounce-free style offers zero distractions on the run so runners can reach their max speeds and achieve PRs. Features an AirStretch Belt with custom QR™ quick-release buckle. A 40% Flatter BPA- Free bottle has a Jett-Squeeze™ caps for quick hydration on-the-go. AirStretch zippered pocket measuring 5.5"W x 2.5" for keys, ID, nutrition and other essentials. Reflective detailing helps enhance visibility while running in low-light conditions. An expandable upper main compartment fits phablets, iPhone 6 Plus! (7" x 5").