Trades accepted!! Features and Benefits Size S/M 1.5 Liter (50 oz.) Hydration Engine Quick release valves on drinking and pressurization tube Slide top and wide open mouth for fast refill Reversible, dishwasher safe reservoir Made from stretchable, breathable and lightweight polyester mesh Form fitting adjustable vest design for comfort during any activity Quick adjust pull tabs for easy fitting Easily accessible storage pockets for phone, keys and other essentials Sprays, Filter Ready, Reversible 50 Oz, Dishwasher Safe Reservoir Comfortable, close-to-body fit. Offerred in small-medium and large-XL. This one is the small-medium size Candence vest. Size. Small-Medium. Adjustable chest strap. Stretchy nylon and breathable mesh. Good fit for bodies 5'2 105 lbs to 5'6 160 lbs. Two small front pockets for cell phone and small snacks. One stretch sfuff pocket in the back for extra shirt, socks or snacks.