Loafers & Slip-Ons by Sanuk. Details:Description Feel the radical barefoot comfort in the shoe upper-sandal bottom of Sanuk Men’s Single Fin Sidewalk Surfers. These men’s vegan slip-ons are made with sustainable hemp, natural materials, and high rebound Soft Top footbeds. The hemp-cotton blend uppers have Wallaby-inspired detailing, raised toe seams, and comfy padded collars. For easy on and off, there are elastic laces and kickdown heel counters.