This style fits true to size, order your normal size. If you are between sizes, we suggest to order the next size up. Designed in QC Upper: Synthetic nubuck leather and ripstop type mesh with 3M Scotchlite reflective trims Lining: Extra warm synthetic fur with 3M Thinsulate insulation and full waterproof membrane Protective bellows tongue Lining of insock: Foam backed synthetic sherpa for added comfort Insole: Shock-absorbing EVA for added comfort and support Midsole: Lightweight compressed EVA offering extra cushioning and insulation Outsole: Durable, slip resistant, non-marking rubber with ice gripping inserts Textured toe guard Cold Rated -30 ºC Waterproof Anti slip