Details from Mammut:
The Removable Airbag System 3.0 is an avalanche airbag system based on a square, brightly-colored airbag that deploys behind the wearer’s head within seconds. The new system is safe and easy to use. It is even lighter and smaller than before and can be attached to all Removable 3.0-compatible backpacks.
Ultra Lightweight - Our lightest airbag system weighs just as much as 1 liter of water. Removable Airbag System 3.0 + carbon cartridge = just 1 kg
Filling Time: 3 sec
Cartridge not included