Profile Design's Gold Cell uses the most advanced wetsuit technology to make you blindingly fast in the water. It's made of top of the line Yamamoto GIGA #40 neoprene that is unbelievably comfortable, flexible and water-proof. To ramp up the speed this sleek suit features grooved arm/leg panels that provide resistance during the pull of your stroke, a super-slick outer surface and a flexible zipper that conforms to your body preventing drag. It's even fast on land, with a reverse zipper, shorter arms and legs for blazing removals and flexible 3mm neoprene behind the knees to help you run faster into T1. And, for a chafe free fit the collar is made from supple 7mm neoprene.