Gul 3mm profile top juniors this gul 3mm profile top uses thermospan to insulate core body panels and can be worn on its own or as part of a layering system titanium 2 lined thermal neoprene reflects the heat back in this top really is a versatile garment in both warm and cold water conditions being windproof and water resistant as well as providing 50 uva and uvb protection a great edition to all watersports enthusiasts kit thermospan ultimate insulating core body panels x flex