Unisex Arena Powerfin Training Fins Men and Women Silicone Short Blade Flippers Men Size: 7.5 - 8.5, Color: Acid Lime Soft silicone short blade fins help to develop power and a stronger flutter kick; Diamond shape tip and closed heel Short blade allows for a high power kick frequency; Exclusive sole design The arena Powerfin is a classic fin to increase speed and intensity during workouts, while increasing cardiovascular training 100% long life silicone for maximum comfort; Provides good grip Silicone helps reduce the chance of blisters