How big does a rucksack for mountain adventures have to be? 30 litres is the perfect choice - big enough to fit skins and more for a small tour, but small enough so it doesn’t bother you while riding. The Evoc Line R.A.S. 30L is exactly this size, comes with numerous features, pockets and extras, has a back protector, an ergonomic fit and is compatible with Mammut’s R.A.S. airbag system. FeaturesLiteshield Back ProtectorNeutralite SystemBody HuggingAir CirculationKey HolderAvalanche Equipment PocketHip Belt PouchMobile Phone PocketAluminium Hooks