Get free shipping and sales for the Columbia Winter Trek Omni-Tech Black/Copen Blue Footwear Built on a rugged winter hiking platform and designed for those harsh winter hikes and perilous adventures, the Winter Trek Omni-Tech is ready to perform for any active winter activity. Rated to withstand temperatures as low as -25 F/32 C thanks to the 200g. Thinsulate insulation. Synthetic and nylon upper. Omni-Tech technology features waterproof, breathable microporous membranes to keep water from penetrating in, while allowing perspiration to escape. Gusseted tongue and front lace-up closure. Contour Comfort 1D footbed with AgION antimicrobial technology protects against a vast array of bacteria to keep the footbed clean and to neutralize odors. The Techlite molded midsole is made from durable, impact absorbing material, delivering consistent support. Techlite is also non-marking, cleans easily and is easy on the environment. The red Omni-Grip outsole is comprised of soft, flexible and firm compounds to provide increased abrasion-resistance for added durability. Designed for winter sports, the Omni-Grip outsole is formulated to maximize traction in snow and ice while resisting colder, harsher temperatures.