Reef's Original bottle opening thong. The Leather Fanning. Developed with three time world surfing champion Mick Fanning. The Leather Fanning features a water friendly full grain leather strap with a soft padded jersey lining, a high rebound molded EVA footbed, full 360 degree airbag under the heel for adding cushioning, and of course, a built in bottle opener on the outsole for cracking a couple cold ones!