These award-winning swim training short fins are Australian Designed. DMC ELITE SWIM Fins are the World's most sought-after swimming training fins. Designed for swim training by the most renowned Australian Swim Product Company - DMC SWIM. These swim Training Short fins are made from SILICONE and are super comfortable with much less chance of abrasion than rubber swim fins. These swim training short fins by DMC are great for Lap swimming and particularly Serious Swim Training Used by many Olympic Class Swimming Athletes in Training and Warm Ups.