This hard shell backpack is a back designed Specifically for frequent travelling weekly hiking biking and occasion skiing Future in a bag panel protector that’s aerodynamically molded improve the airflow behind the rides a helmet shard and waterproof-shell to protect all of your important items , and easy access to compartment while wearing gloves Designed to keep you and your gear safe while maintaining a sleek that will get you noticed Measures approximately 22 inch x 12 inc x 6 inch