Here's what other sites are saying:
The Mammut Light 30 Backpack is the absolute featherweight among Mammut's avalanche airbags. With the Removable Airbag System without a cartridge, the avalanche airbag weighs around just 1.8 kg. However, it still offers all the features you would expect from a good one-day touring or freeriding backpack. Very comfortable to carry, with attachments for skis, snowboard, axe and ski poles. Its packing volume of 30 liters makes the Light Removable Airbag an all-rounder in terms of applications. Removable Airbag System: a system designed for use in several backpacks (READY without airbag system, system can be purchased separately here: Mammut R.A.S.). Safety leg loop. Lightweight ski touring and freeriding backpack. Backpack weight just 950 g. Weight with Removable Airbag System R.A.S.: 1800 g. Diagonal ski carrier. Snowboard carrier. Side compression straps. 2 ice axe carriers. Hydration system compatible. Requires the Mammut Refillable Cartridge, sold separately. Weight: 950 g or 2 lbs 1 oz. Color: Iron/Smoke
- Tahoe Mountain Sports
With the Light RAS Ready 30 Backpack from Mammut, weight is no longer an excuse to sacrifice backcountry safety. This fully featured ski pack still supplies enough room for a day's worth of touring gear but greatly reduces bulk and unnecessary weight for a streamlined, efficient system you can rely on. If you add the airbag, engine, and canister system (sold separately), you gain the full benefit of an avalanche airbag system. When you trigger the canister, the airbag fills to 150 liters in three seconds. You now stand a greater chance of rising to the top of a slide. The airbag's bright color will help rescuers find you and it protects your head and neck against trauma.
- Mountain Gear