COOL FACTOR Power Bands? Three-speed Gear Shift? It's as if your Boflex and mountain bike gave birth to a fin. KEY FEATURES New technology ahead: The Slingshot's pure silicone Power Bands accumulate energy on the power stroke and release it on the upstroke for an added boost. Plus, the new three-speed Gear Shift customizes speed-toeffort ratios to fit specific conditions. It's easy to shift during dives, even with gloves. The blade, attached to the foot pocket using a mid-foot flex joint, takes strain off toes and ankles, while increasing range of motion significantly, up to five times that of a conventional fin. Available in black/silver, blue/silver and red/silver, and in small, regular and large/extralarge.