ROKA Women's Maverick Pro Sleeveless Wetsuit Yamamoto Neoprene - In the Maverick Pro we use only the very best neoprene in the world from the Yamamoto Corporation, which is located in Japan. Yamamoto neoprene is limestone-based and has a different cell structure than the more commonly used petroleum-based neoprenes from Taiwan and Korea. It is stretchier, returns to form better, and offers an excellent insulation-to-weight ratio. Yamamoto makes a variety of neoprene types, and we use a few different ones (for different reasons) in varying thicknesses, in our suits. We also use different nylon and polyester liners on the inside of the suit to balance stretch, water absorption and support. The Maverick Pro contains #40, #39, and Aerodome neoprene variants in a variety of thicknesses. Low Cut Neck - Our wetsuit uses a low cut neck to seal out water but prevent choking/constriction. We still recommend using Body Glide as best practice to eliminate chafing. Our neck line uses Yamamoto #40, an extra little attention to detail, to maximize stretch and comfort. Quick Release Ankle Panels - The ankle panels of our suit use a 2mm panel at the base of the leg to help you kick your heel out of the suit in T1. You might not notice a difference in a changing room with a dry suit, but when you are at speed in T1, your suit will come off very easily. Our ankle panels are heat taped for durability and to allow you to cleanly shorten the leg, as needed.