DXDIVER Bailout Pony Bottle Diving Kit with Hose 6 cf Tank Gauge Regulator Spare Secondary Air Scuba Dive Egressor 6 cubic foot at 3000 Psi 0.9 Liter Pony Bottle - 2x the volume of similar setups Integrated 1st stage with 2 LP and 1 HP port with Button Pressure Gauge Easy breathing due to conventional regulator design Fill adapter for easy filling on conventional tank. Comes Hydro stamp and Fresh VIP Sticker ready to use