• The material resistant to tars, abrasion and water resistant. • Extreme padding on straps and 3 foam pads for breathability and comfort. • INCLUDED 2L BLADDER: With a hydration insulation compartment which works great for 2L BPA FREE hydration bladder and keeps liquid cool up to 4 hours as a hydration backpack. • MOLLE SYSTEM & NET POCKET DESIGN: The MOLLE system is designed for convenient combination with other equipment. Extra net pocket compartment for clothes, towels and easy access. ADJUSTABLE SHOULD & CHEST STRAPS: The D-shape loop attachments on the shoulder straps for small items. The chest straps make sure it doesn't bounce when you move, balance your body and reduce the pressure of the back.