It also helps give the blade “lift”, meaning your feet are near the surface at all times to help you to kick correctly. The density of silicone helps keep your feet under the water to optimize each kick. DMC SWIM Fins are used by Australian and International Olympic Swimming Team Members. SIZING The Elite Fins come in 5 sizes and they have their own blade-to-foot area ratio, ensuring the perfect fit. Swimming Fins DMC Elite Max Fins Pink- Surf FX Speedo Swim Bags For Swimmers Short Vs Long Blade The length of a fin really does make a difference for practice. The DMC Elite fins were designed as all round swim training fins for pool swimmers. The short length blade offers similar power as a stiffer bladed fin due... DMC Elite Silicone Water Fins for Swim and Training The foot pocket shape has been designed to fit feet smoothly, reducing the possibility of cramps and increasing overall comfort. MATERIAL These fins are made of silicone and will not cause abrasion that rubber is prone to. Long fins are uncomfortable and increase cramp, strain on joints and muscles. A Fin for Every Swim | Shop Speedo x DMC Fins | Speedo A Features V-RAIL The “V” rail is along the edge of the fin and is designed so that the blade is stiff enough to channel water smoothly. Universal Air Conditioner® CO29109C - A/C Compressor Assembly DMC Fins - Max Speed - Less Fatigue! This unique shaping is made perfect for every swimmer, from novice to Olympic.