Aetrex Women's Scarlett BootSize Chart The Scarlett is the ultimate cold weather boot that blends style with unbeatable comfort. Made out of genuine suede, the Scarlett features arch support and a roll down top that can be styled two different ways. These boots have a shearling lining and a lug sole that ensures durability and traction while elevating your winter outfits! Each Aetrex shoe is anatomically designed based on data and learnings from over 50 million 3D foot scans.