Product Details The all-new BLITZ XP boot comes in a variety of traditional and modern colors, featuring an innovative positive-lock buckle system, outsole with steel shank insert, fully synthetic calf inlays for premium durability and injection-molded panels for support and coverage. Pre-curved injection-molded shin plate. Four fully adjustable straps allow for a custom, rider-specific fit. Fully synthetic calf overlays deliver premium durability and optimal grip. Injection-molded medial abrasion plate with integrated shift protection. Metal toe cap reinforces the outsole strength. Uni-directional outsole with a steel shank insert. Injection-molded positive lock buckles. Mesh liner promotes airflow. Tested and CE Certified according to standard EN 13634:2015. How to Measure For Thor Boots: MENS US Euro UK Inches CM 6 39 5.5 9.25" 23.5 6.5 39 6 9.5" 24.1 7 40 6.5 9.625" 24.4 7.5 40 - 41 7 9.75" 24.8 8 41 7.5 9.9375" 25.4 8.5 41 - 42 8 10.125" 25.7 9 42 8.5 10.25" 26 9.5 42 - 43 10 10.75" 27.3 10 43 9.5 10.5625" 27 10.5 43 - 44 10 10.75" 27.3 11 44 10.5 10.9375" 27.9 11.5 44 - 45 11 1.125" 28.6 12 45 11.5 11.25" 28.3 12 45 11.5 11.25" 28.6 13 46 12.5 11.5625" 29.4 14 47 13.5 11.875" 30.2 15 48 14.5 12.1875" 31 16 49 15.5 12.5" 31.8 WOMENS US Euro UK Inches CM 4 35 2 8.1875" 20.8 4.5 35 2.5 8.375" 21.3 5 35 - 36 3 8.5" 21.6 5.5 36 3.5 8.75" 22.2 6 36 - 37 4 8.875" 22.5 6.5 37 4.5 9.0625" 23 7 37 - 38 5 9.25" 23.5 7.5 38 5.5 9.375" 23.8 8 38 - 39 6 9.5" 24.1 8.5 39 6.5 9.6875" 26.4 9 39 + 40 7 9.875" 251 9.5 40 7.5 10" 25.4 10 40 - 41 8 10.1875" 25.9 10.5 41 8.5 10.3125" 26.2 11 41 - 42 9 10.5" 26.7 11.5 42 9.5 10.6875" 27.1 12 42 - 43 10 10.875" 27.6 YOUTH US Euro UK Inches CM 12.5 30 11.5 7.25" 18.4 13 31 12 7.5" 19.1 13.5 31 12.5 7.625" 19.4 1 32 13 7.75" 19.7 2 33 1 8.125" 20.36 3 34 2 8.5" 21.6 4 36 3 7.87" 22.2 5 37 4 9.125" 23.2 6 38 5 9.5" 24.1 7 39 6 9.75" 24.8