Powered by ForcElast Technology; the Tusa patented 20 degree angled blade design (a). B. D-ring. ; Multi – Compound foot pocket increases power transfer to the fin blade; Newly designed anatomic foot pocket enhances comfort; Three Channel Blade with crescent tip maximizes propulsion; Reinforced blade side rails and vents fine – Tune Performance; Standard with Anatomic Fin Strap (a). F. Small size. ; TUSA patented EZ Strap and buckle system; MyScubaShop is an Authorized TUSA dealer