Fly Racing began as a manufacturer of motorcycle handlebars and helmets. Since then, the brand has quickly developed into one of the fastest growing powersports apparel brands in the market. Construction: FLY Racing's HDM (High Density Memory) protectors are made of a special blend viscoelastic foam with memory function allowing for repeat impacts that passes CE EN1621-1 rating to level 1. Hidden stitching prevents fraying and adds to durability. Features: The protective pads feature an array of breath holes to increase airflow. Extended upper cuffs and internal silicone gripper bands help with slipping. The pads are both soft, lightweight, and low profile. Fit: Four-way stretch mesh panels at the rear help in giving a great fit and allowing air to escape.