Ultraspire Revolt Race Vest | 550mL BPA & PVC Free UltraFlask Water Bottle Included FEATURES - The Optimal center of gravity in the rear left or right-side access holster to carry a bottle and other essentials; its soft and supple perimeter binding wicks away moisture and stays comfortable against bare skin; its adjustable shock cord double closures can be used as attachment points for Z-poles or gloves FLUID CAPACITY - It includes a 550 mL UltraFlask Hybrid bottle; BPA free, Phthalate free, and PVC free DUAL MAX O2 STERNUM - A hook-type attachment system with an enhanced recoil for a better range of motion, and quick in and out CARRY EVERYTHING YOU NEED - Rapid access pocket and let the consumer decide what goes in, such as gels, foods, pills, electrolytes, keys, a cell phone or any other small personal device, a credit card or money, and even light clothing RECOMMENDED USE - Minimalist and fast ultra-racing in hot weather with refueling stops every hour Optimal center of gravity rear left or right side access holster for carrying a bottle and necessities. Over-the-shoulder accessed expanding quick stash for gloves, sleeves, rain jacket or second bottle. Max O2 Sternum: A hook-type attachment system with enhanced recoil for better range of motion, and quick in and out. Two front elasticized pockets hold gel flasks, multiple packets of gel or cell phone. Adjustable shock cord closures double as attachment points for Z-poles or gloves. Lower zippered pocket on one side, the other with a sweat-proof Magnon Electrolyte Pocket for dry pills. Proprietary large-holed mesh, made of soft microfiber polyester for comfort and breathability. Soft and supple perimeter binding made with polyester to wick away moisture, and stay comfortable against bare skin.