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. ; Weight of footwear is based on a single item, not a pair.