Sold out online The Willa Convertible-Strap Mule in black Leather from Madewell Women’s size 6.5 See details from Madewell site below: Crafted of leather, this mule has a cute convertible slingback buckle strap and a clog-inspired platform sole. And, cushiness alert: Our MWL Cloudlift Lite padding feels like walking on a...well, you know (so no stressing over wearing these all day). When you select your size, "H" equals a half size. 2 1/2" heel. Leather upper. Pigskin lining. 100% rubber sole (30% of which is recycled). Do Well: leather sourced from a tannery that achieved a Gold Rating from the Leather Working Group (LWG), an organization that works to promote sustainable environmental practices in the leather industry. Import.