The premium Ergon BX2 backpack is ideal for mountain biking. The redesigned, adjustable carrying system of this backpack allows for maximum adjustment to the size of the body, whether petite or stout.the "Adaptive Carrier System" uses the principle of load compression and thanks to the flexible aluminium profile, the backpack adapts perfectly to the rider's anatomy. Ergon backpacks offer not only unique ergonomics, but also a lot of features. Once you try them, you'll love them. name: BX2 EVO Purpose: MTB, Racing/Marathon Size: Uni Weight: 860 g Volume: 10 L + 1.5 L Material: nylon, polyester Raincoat: included Backpack layout: 1 main compartment with internal pocket 1 front compartment with mesh pocket 1 small front zippered pocket 1 large zippered pocket in the waist belt 1 small pocket in the waist belt 1 pocket with raincoat in the bottom of the pack