Air Tech II Vest with 45G Cartridge $395.00 Air Tech II Vest with 45G Cartridge- Youth Size/XXS-XS Adult $375.00 Air Tech II Vest with 65G Cartridge $425.00 Air Tech Vest Hex key and Screw $4.95 Comfortflex Protector – Adult $175.00 Air Tech Vest Cartridge $39.95 – $42.95 Air Tech Vest with 45G cartridge- Adult’s $465.00