Ryka Women's Tenacity 100% Textile and Synthetic Imported Rubber sole Weight is 9.2 oz. Flex-Foil and Direct Fuse layers provide support while Velcro strap over midfoot gives her a secure fit. RE-ZORB footbed. Dual foam midsole engineering provides extra cushioning at key pressure points in forefoot. I.H.G. clip provides stability in heel. Rubber outsole with pivot design offers traction and allows for easy transitions from one dance move to the next.