SkaDoo Mens Snow Winter Cold Weather Boots Synthetic Synthetic sole Insole Lengths In Inches: Size 7: 10.51 Size 8: 10.75 Size 9: 11.02 Size 10 11.30 Size 11: 11.54 Size 12: 11.81 Size 13 12.09 Insulated Cuff For Extreme Weather Protection Zipper Closure for easy on/off Weatherproof