www.zappos.com Product Description: # Please click here for the La Sportiva Size Conversion. # The Speedster is a minimalist climbing slipper designed to allow ultimate sensitivity and freedom of movement. # Designed to provide sensitivity for excellent edge control and high performance footwork. # All Lorica® upper for no-stretch performance and power. # Leather in the heel and forefoot. # P3® midsole. # Out-of-the-box edging performance with a 3mm rounded sole for immediate, exact edging performance. # 3mm Vibram® XS grip outsole. # 9.00 oz. # Product measurements were taken using size 39 (US Men’s 6.5-7, Women’s 7.5-8). Please note that measurements may vary by size.