CAPACITY -- 18oz with push / pull Race Cap, Expandable zippered stretch pocket keeps essentials protected like your iphone, Samsung, keys and gels. Easy-squeeze bottle with leak-proof, soft-sip, Push Pull Blast cap. BOUNCE FREE -- Angled insulated bottle holder on running waist pack allows easy one-handed access, Easy to store and easy to release from belt – stays in place throughout run! Ultra-lightweight Bounce-Free design stays comfortably in place. COMFORT -- Extended side panels hug the body comfortably for a perfect fit, Bottle and storage areas are securely fastened to ensure your essentials are protected. One Size Fits Most Adjustable Fit Belt STYLE AND SAFETY -- Reflective detail and trim helps you be seen in dim light, without sacrificing a sleek aesthetically pleasing design. Fits your phone, coins, keys and more. MINIMALIST -- Eliminate the need for a larger running hydration pack – Simplistic and functional. BPA and PVC Free.