Apollo Japan Submarine Co., Ltd. Bio-fin Pro Spring Strap Specification Color: Orange Size: S ・Minor scratches and scuffs from use ・Cleaned ・Accessories: None 【Product Details】 Fins that don't tire you out, don't cramp your legs, but propel you forward well. The Bio-fin series has been adopted and used by diving units and special forces around the world, as well as maritime police and rescue teams. The superior propulsion that supports even heavily equipped divers, and the Bio-fin's world-class fin characteristics that reduce unnecessary fatigue and support reliable task execution, are the reasons why they are widely accepted in these extreme use areas. In addition, spring straps that do not break and can be quickly attached are also adopted in many countries. These facts prove that Bio-fins are the best and most optimal fins for all divers, including recreational divers. Awarded the Good Design Award in 1999 Achieves astonishing propulsion with little power The Bio-fin series uses natural rubber as its main material, and achieves unparalleled functionality with its excellent operability and propulsion. It also has negative buoyancy in seawater. By optimizing the shape of the split fin with a unique design, it has achieved excellent efficiency and endurance by reducing the load. In addition, it has a sole pattern that considers anti-slip performance and high traction when walking, and a comfortable foot pocket. Spring strap standard equipment The Bio-fin Pro SP is equipped with a spring strap as standard. The stainless steel strap has no risk of breaking during use, and maintains a stable tension to secure the fin and boot during use. In addition, it can be easily attached by simply pulling up the heel protector, and entry is easy even when holding other equipment. Even when switching suits from dry to wet, it can be accommodated by replacing the spring. 【About Shipping】 We will pack it with bubble wrap when shipping. Please note that it will be a simple package. If you wish to have a cardboard box, please comment. We will try our best to accommodate you.