Aqua Lung Rocket II FinsAqua Lung's Rocket II fins feature a greatly improved design these fins are not the older traditional Rocket fins. Big Foot pocket fits over heavyweight dry suit boots Flexible material construction is neutrally buoyant Large foot pocket has drain holes and floor ribs to reduce suction Molded in reinforced grommet type holes for hooking up fins Fin strap has large rubber loop for pulling on straps Heavy duty stainless steel buckles with bolt and