Open Heel Long Blade Fins, Silicone Mask & Snorkel Professional Free-Diving Quality Open Heel Fin for comfortable fit Black Silicone Mask for improved vision Further Information: High performance twin lens mask. Black silicone skirt for enhanced vision, increased comfort, performance, and durability. Black Silicone snorkel with purge valve for easy clearing of water. Bright yellow splash guard to stop water entering from top of snorkel. Open Heel design fins for comfortable fit and variable sizing. Extra long blades with side reinforcement for greater propulsion with less effort.