Built For Winter, This Iteration Of The Nmd Features A Leather Midfoot Cage With A Water-Repellent Finish, A Plush Insulated Lining, And A High-Cut Ribbed Collar And Welded Seams For Additional Protection. Sitting Above An Ultra-Cushioning Boost Midsole, The Pair's Knitted Upper And Ortholite Sockliner Provides Premium Comfort, And The Silhouette Is Complete With A Rubber Outsole Made For Firm Traction On Rough Terrains