At 33 liters, the Pro Short is Mammut's guide-focused avalanche airbag pack. The "Short" is designed for a woman's frame — the torso measures about 2.5 inches less than the regular and the shoulder straps are closer together. The Removable Airbag System is included. R.A.S. deploys the one-piece, square avalanche airbag that's meant to keep you floating towards the top of a slide. R.A.S. is removable so you can use the pack without it for resort riding, or zip it into another pack in Mammut's line. A refillable cartridge must be purchased separately.* Main product photo is Black/Imperial.