Designed with exclusive alignment technology to balance the whole you. Premium upper materials. Durable rubber outsole. The built-in Vio Motion Technology footbed features contoured arch support, shock-absorbing cushioning, a deep heel cup to provide stability, and forefoot flexibility. Helps correct pronation and promotes full-body alignment, addressing many different types of foot ailments. For optimal comfort, wear your new Vionic shoes for a few hours to let your feet adapt. Within 1-2 weeks, you should experience full orthotic comfort and support. Upper: Leather. Lining & Sock & Sole: Other. Heel height approx. 4.0 cm.