The upper is constructed from a microfiber which is superbly lightweight, durable and abrasion resistant 3D ankle protection for an improved fit Ankle strap provides a secure closure Flex areas on heel and instep for enhanced comfort Advanced 3D mesh offers a highly breathable lining together with a microfiber suede anti-slip surface inside the heel Speed lace system derived from Auto racing Internal protective toe box and heel counter are positioned under the outer chassis Rubber sole provides a textured grip with excellent absorption Replaceable anatomical EVA footbed with lycra lining on top Strategically positioned metallic mesh vent for improved airflow Cat 2 CE-certified to (EU) 2016/425