La Sportiva Miura Climbing Shoe - Men's Yellow 41 Synthetic Ideal Terrain: overhanging sport routes, bouldering, gym climbing and technical face climbing Upper: Leather; Lining: Dentex Midsole: 1.1mm LaspoFlex (forefoot only); Sole: 4mm Vibram&reg; XS Edge Last: PD 75; Fit: Performance w/ High Asymmetry Weight: 8.43 oz / 239 g