Wave Tribe 8ft Strong Bull Eco Leash. Strong like bull. The world’s only recycled surf leash just got even better with a one year warranty! Wave Tribe promises to replace your leash for freesies if you break it within one year of purchase. Proof that recycled products are just as strong as their wasteful counterparts. Construction details include 100% recycled polyurethane cord, double swivel technology, board saver, reinforced webbing, and key pocket. 8ft. Wave Tribe.