The Arva Reactor Flex Pro 24L Airbag Backpack built for all day outings in the backcountry where toughness and durability matter. A heavy duty design is reinforced with Cordura Ripstop in key areas for maximum abrasion and water resistance, and it’s built on Arva’s Flex Frame system which allows you to easily switch between different pack sizes while using the same airbag base unit. With the lightweight and reliable REACTOR 2.0 Airbag System at your back, you can ride safe in the knowledge that you have an extra margin of safety if things go pear shaped.