For those quick jaunts when a pack is not needed, this lightweight belt system with water bottle will help you stay hydrated. Highly breathable air mesh waistbelt holds a single water bottle in a molded foam pocket. Zippered top pocket features a key-keeper clip for added security. Twin mesh flat pockets with elastic-bound edges are sized to fit small energy gel packets. Lightweight adjustable webbing straps minimize bulk reflective elastic shockcords provide external storage and help you to be seen. Comes with a 24-fl. oz. water bottle made from FDA-approved food-grade polypropylene that wont flavor your water or leach chemicals. Water bottle is compatible with most water bottle cages on bikes.