Features: Scientific belt structure design,match with soft and wide waist belt,to disperse more stress from the bag,protect your shoulder and back,and feel more comfortable when carry many many stuffs. -80L large capacity, hidden rainproof design, two-way zipper - Side pocket design, items that can be placed in the kettle umbrella; Top pocket design, can be put into the wallet and other items; Bottom pocket design, can be put into the other items. Tips: - Pack your bag tightly through drawstring line and belt buckle,you will feel light when back heavy stuff - inclined forward when walking,hiking,to help disperse the weight on shoulder Note: - The product is measured manually and may vary, please refer to the actual size. - After receipt, check the goods. If you have any questions, please feel free to contact us by email. I am very happy to serve you and wish you a happy shopping.