About Deuter Attack 20 Backpack Deuter's Attack 20 backpack bridges the divide between hydration pack and body armor, and is a great choice for enduro riders. The removable Shield System provides back protection, and multiple compartments hold hydration, tools valuables and more. Deuter Shield System with integrated SAS TEC back protector and smart foam dampening stays flexible during normal use and stiffens on impact Anatomically shaped shoulder straps for complete freedom of movement V-shaped foam protects spine and shoulder blades Wide air channels between padding for ventilation Ergonomic waistbelt with mesh hip fins and zip pockets Large main compartment with hydration sleeve and tube exit port (reservoir not included) Fleece-lined top media/sunglasses pocket Front compartment with tool organizer sleeves and key clip Side stretch mesh pockets Deployable helmet holder Rain cover Reflective elements Sternum strap Specs about Deuter Attack 20 Backpack Pack material: Deuter super polytex (600 denier polyester), 210 denier Macro Lite (nylon) Frame type: Internal Frame material: SC-1 foam and PE Hydration compatible: Yes Pack loading: Panel Rain cover: Yes Recommended use: Cycling Dimensions: 20x11x8.7" Pack capacity: 1220 cu.in. Volume liters: 20 Weight: 3 lb. 8 oz. Fits torsos: 17.25-21.25" Made in Viet Nam