- Equipped with a back protector compartment that has been designed to accommodate an Alpinestars Nucleon KR-CELLi back protector (Size M). - Thermo-formed front panel is semi-rigid for strength and aerodynamically sculpted to provide minimal drag when riding. - Durable textured main body fabric utilizes a Jaquard-weave 440g polyester with TPE back coating for exceptional durability. - The Charger Pro Backpack is expandable allowing users to increase the capacity of the backpack by approximately 4.5 liters. - Rain cover included for wet weather performance.