George Greenough 4A Fin heather navy the RBZ Stealth Mode wards COLOUR:BURGANDY the RBZ Stealth Mode wards off water and protects with an inner water barrier that keeps the cold out—the perfect suit for surfers of all levels UPF 50+ Ultraviolet ProtectionPerfect For Chilly Days When An Extra Layer Of Warmth Under Your Wetsuit Is NeededThermo X Layering Fabric Provides Incredible Insulation With Low Bulk And Quik Dry Properties220g Nylon Spandex Includes Water Repellency And Odor Resistance***Super Low Neck: No Interference With The Neck Of Your Wetsuit the 4 A is a fin that will hold when you need it to and release when the time is right Its full base coupled with a tapering