YDA are extra wide, extra deep Strong fibreglass support in the insole to give extra support and stability to the foot (rocker sole) with a springboard system ensures less friction when worn, yet still remaining ultra-light. They also have a strengthened support at the back of the shoe again for added support and stability for the ankle. With a seam free inner lining, the shoe is a ideal in prevention of ulceration for diabetics. They also do not rub on the metatarsal joints, ideal for patients with a hallux valgus deformities. Removable insoles, allow for bespoke orthotics to be added.