The SF-5x Platina Plus is the world's only urethane fin. Featuring a multi-compound design and TUSA's patented Hybrid Blade System (H.B.S.), the SF-5x offers unparalleled propulsion, efficiency and power transfer. Incredibly stiff urethane side rails and ultra-responsive membrane blade combine to give unlimited kicking potential. The Platina Plus will complement a more traditional kicking style or a split-fin style kick. It is ideally suited for all conditions, consistently delivering superior performance and efficiency. The material characteristics of urethane and TUSA's superior design make the SF-5x Platina Plus the fin of the future.