The refillable avalanche airbag compressed air cylinder is the power and driving force behind the BCA Float system. When the Float trigger is pulled, it activates the release of 2,700 psi of compressed air, inflating the airbag. Comes with Consumer Refill Kit (Five o-rings, allen key, vacuum grease, and toothpick) for refilling. Only compatible with Float Avalanche Airbag Systems. MATERIALS 290 ml aluminum compressed air cylinder WEIGHT 624 grams (Full), 567 grams (Empty) CERTIFICATION DOT, TC, and TUV certified