The contoured EVA semi-rigid backpack with with a double compartment has a capacity of 17 liters. Closure of both compartments by waterproof zipper for a secure closure. A special padded compartment for a laptop up to 15". Equipped with an external helmet holder and reflective striping. Adjustable, padded and pre-formed shoulder straps for maximum wearing comfort. Adjustable straps for waist and chest. Padded ergonomic handle and back panel for optimal comfort without perspiration.