Please click for the La Sportiva Size Conversion. Push yourself to the next level with the high performance construction of the La Sportiva Genius climbing shoe. Editors Choice for Climbing 2015. Lace-up design provides comfort and a secure fit, making this shoe fit every type of foot. Suede leather and microfiber upper. P3 technology maintains the down-turned shape of the shoe for the life of the shoe which produces a veritable edging machine. Unlined interior. PD 85 last. Slip-lasted construction makes the shoe less stiff than board-lasted shoes. 1.1mm LaspoFlex midsole with No-Edge technology delivers unparalleled edging performance on the rock. 3mm Vibram XS Grip2 offers incredible edging ability and smearing performance while remaining durable and even wearing. Made in Italy. Measurements: Weight: 10 oz Product measurements were taken using size 44.5 (US Mens 11), width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.