Size/Fit Summary: Fits smaller around ankle. If you have a wider ankle or are in-between sizes,it is recommended to size up due to the fitted sock inner which fits snug to the ankle for ultimate insulation.Extreme cold weather calls for the Intrepid Ankle Snow Boot. Handcrafted with a recycled nylon upper,recycled fleece lining and an innovative Ortholite footbed,they'll have you treading through frosty excursions with comfort and support. These greyankle boots can be worn in temperatures as low as -20��C (-4��F) due to the fitted inner sock which retains warmth.Certified veganWaterproofHandcrafted using lightweight rubber100% Recycled upper,lining and insoleInsulating fleece liningOrtholite footbedPull tab for ease of entryKick Spur for ease of removalHydroguard waterproof internal membrane to keep your foot dryCan be worn in temperatures as low as -20��C