ATS® Max technology disperses pressure to keep you as comfortable at the end of your day as at the beginning. DRYShield™ waterproof construction keeps you dry in humid environments 3M™ Thinsulate™ insulation for more warmth with less bulk U-Turn® entry system makes it easy for people with high arches to put on their boots Removable Pro Performance insole for cushioning and shock absorption Lightweight EVA midsole absorbs shock Oil-resistant, non-slip Duratread™ sole provides maximum wear resistance Goodyear welt construction Four row stitch pattern with embroidery ASTM F2413 M/I/C PR EH