Backcountry Access Float Compressed Air Cylinder 290 ml aluminum compressed air cylinder Filled to 2,700 psi Weight: 1.38 pounds / 626 grams (Full), 1.25 pounds / 567 grams (Empty) DOT, TC, and TUV certified Comes with consumer refill kit (5 o-rings, allen key, vaccum grease, and toothpick) for refilling