The HRO rubber sole, which is heat-resistant up to 300°C, is based on the latest running shoe technology. The sole profile ensures optimum mobility and secure contact with the ground. A flexible penetration guard made of ceramic-coated fibres protects the entire surface of the feet from penetrating objects. This anatomically shaped, lightweight footbed with a waffle structure keeps you cool and dry by wicking moisture away from the foot during wear. The shoes also dry extremely quickly after taking them off. The highly flexible textile fabric moulds snugly and easily to the human foot. The unrivalled fit fits like a sock without any pressure points on the foot. The upper, made from a blend of high-quality synthetic fibres, offers high resistance despite its enormous flexibility. In this ultra-lightweight midsole, countless tiny air bubbles ensure optimum cushioning and improve the rolling motion of the foot. The torsion control element in the centre of the sole supports foot movement and ensures greater stability.