Waistpack ICE Water Cooling System (Waistpack, 1.5L Bladder, Pump unit, 7.4V 2.2A battery and charger, one liquid cooling vest). COMPCOOLER Waistpack ICE Water Cooling System with 1.5L detachable bladder was designed for portable body cooling application. Component List: Waistpack (1) Pump Circulation Unit (1) 1.5 L Detachable Bladder (1) Rechargeable Battery 2200mAh 7.4V (1) COMPCOOLER Liquid Cooling Vest, Cold water circulation, keep your body cool and comfortable. Front Zipper Design with sides adjustable device, body fit design, Reversible with two colors (dark green and black), left and right side fitting connection. Liquid Cooling Vest Specifications: Material: Soft Stretch Mesh Color: Dark Green Outer and black liner Cooling Channel: Silicon tubing 3x5mm Zipper: YKK reversible zipper Adjustable device: stretch body fit strap Fitting: White quick fitting for Inlet and outlet Manifold fitting: Aluminum machining Dry weight: 0.5kg Size: XS/S, M/L, XL/2XL, 3XL/4XL Compcooler Waistpack ICE Water Cooling System 1.5L + Liquid Cooling Vest