Longer TiZIP MasterSeal 10 vertical zipper for improved function; Waterproof/windproof/breathable Guardian Elite 4-layer and 5-layer fabrics are treated with DWR (Durable Water Repellent); Reinforced taped seams with up to 75% needle hole reduction from previous models; HD2 material on high-wear areas; NEW and Improved Boot with EVA Midsole and Durable, Rubber-Molded Outsole; 1600g Thinsulate Insulation in the Boots; X-Crossing-Back Shoulder Straps; 2 Front Magnattach Call Pockets; Additional sizing options with new upper/boot size fit selection; Improved boot design with new outsole and midsole for comfort, traction, and warmth