Perfect balance. Soft and structured performance for ultimate control. The Mastia last offers an excellent fit and excellent precision on small and difficult steps, while achieving the highest friction values. The tight, glove-like fit and heel with friction-locking technology provide precise support throughout the foot area. The thermally molded heel cap optimizes lateral control and increases heel hold. The Mastia combines all of its features for perfect balance and maximum bouldering performance without sacrificing efficiency on steep and routes.