Please click for the La Sportiva Size Conversion. Push the limits in the lace version of the iconic Katana. This is the first tubular construction climbing shoe that gives you the performance of a lined shoe with the comfort of an unlined shoe. This powerful, slightly asymmetric, slightly down-turned all-around shoe excels in every type of climbing scenario. Made of leather and Lorica®, a synthetic leather that is constructed from extremely small micro-fibers for a water-repellent, breathable and highly durable material. P3® technology maintains the down-turned shape of the shoe for the life of the shoe which produces a veritable edging machine. Pacific synthetic fiber lining in the forefoot and back. PD 55 last. Slip-lasted tube construction makes the shoe less stiff than board-lasted shoes. 1.1mm Vibram® XS Edge midsole and 4mm Vibram® XS Edge outsole is exceptionally resistant to deformation on razor sharp edges, and it will not creep when smearing. Measurements: ; Weight: 10 oz ; Product measurements were taken using size 40 (US Men's 7.5), width D - Medium. Please note that measurements may vary by size.