Speedo fins speedo dmc super fins blue soft, fast and engineered with patented dmc technology for serious pool training. The speedo x dmc super fins are designed for fitness swimming, engineered in partnership with silicone fin pioneers dmc. Built from soft silform silicone, they provide maximum comfort, reduce fatigue and increase speed with a gentle kicking action. Patented dmc reverse v rail rvr technology stabilises ankle roll, correcting kick torque for optimum speed, power and propulsion. A universal foot cavity makes for quick and easy on and off transitions from deck to pool. A super versatile fin for water enthusiasts who demand comfort and performance. Silform silicone dmc rvr technology reduces fatigue universal foot cavity fitness training 3 key features patented rvr technology dmc’s reverse v rail technology is built into the blade to stabilise ankle roll during your kick cycle. It corrects kick torque so your effort converts directly into speed, power and propulsion. This is engineering designed specifically to improve your swim training output. Silform silicone comfort the soft silform silicone construction moulds closely to your foot without the pressure points common in harder fins. This reduces fatigue over longer sets and encourages a more relaxed, efficient kicking action. You can train harder for longer without discomfort slowing you down. Universal foot cavity the universal foot cavity is designed so swimmers of varying foot shapes can slip the fins ...