This sneaker boot is entirely crafted in premium full-grain leather, velvet suede, and nubuck. The leather lace tabs feature our signature square-moc stitching. Upper features a YKK gusseted nylon zipper to ensure warmth stays in, and the cold weather stays out. The upper is entirely seam-sealed and comfort rated to -30 °c, and -22 °f, and features our weather proven waterproof membrane bootie to keep your feet dry all winter long. Our premium removable comfort molded insole features a cushy wool blend that is both breathable and anti-microbial. The waterproof leather has been pre-treated to repel water and stains.