IST Rubber Rocket Scuba Diver Fins, Military Special Ops Gear, Deep Sea Diving Heavy Duty Equipment (X-Large)

IST Open Heel Rubber Rocket FinsTraditional rubber fin with proven design.Long proven traditional design rubber fins originally developed by U.S. divers and when the Patent ran out everyone now has this classic 'Duck' style fin. Built in different hardness produces responsive blade. Vented channels to direct the water flow.FEATURESBy combining features such as special blade curvature, varying degree of flexibility and structural ribs, the product is positive forward thrust with spring-like effectThe open vents efficiently channels the water flow to give added energy saving effectStainless steel spring fin strap compatible (item no.: FS11)Sizes: M (US 5 EUR 36), L (US 6-7 EUR 37-39), XL (US 8-9 EUR 40-42), XXL (US 10-11 EUR 43-35), XXXL (US 12-13 EUR 46-48)Womens shoe sizes are approximately 2 sizes smaller than mens. Example: Womens size 8 would be Mens size 6