there is a removable thermal liner with 80g insulation on the thighs and seat

and has extensive mesh panels on the rear for optimum levels of breathability

covered by a hook and loop gusseted flap

it can accommodate the Tech-Air® 5 Airbag System

tech aero backpack black white Size:One Size there is a removable thermalThe Tech Aero Backpack is aerodynamically profiled and comes with a host of comfort and performance features that are specifically designed to enhance riding comfort. Incorporating new innovations such as the new anatomical shoulder straps and quick release strap system, this technical backpack is extremely convenient.