Sanuk x Donavon Frankenreiter Collaboration Polyester wool blend flannel upper strap with adjustable hook and loop closure Faux shearling lining Suede-lined high rebound Soft Top footbed with arch support and debossed footbed co-branding Crepe textured rubber outsole with jute inlay Sustainability Initiative(s): All leather used is made from Leather Working Group certified factories which work to minimize the environmental impact of leather production. Collab with American musician, songwriter, and surfer Donavon Frankenreiter