Pinnacle 7mm Tempo XT Mens Scuba Diving Wetsuit Features: Pinnacle&';s patented Merino lining adds up to 35% insulating power Next generation Elastiprene titanium lined neoprene throughout the wetsuit is even stretchier and more flexible than the original Rear zipper is equipped with a extra thick spine flap and smoothskin seal to provide spine protection and reduce internal water movement 8 ankle zipper seals make donning and doffing easier, yet seal water out Smooth skin ankle and O-ring wrist seals create effective barriers to water entry; trapping body-heated water inside the suit, keeping the diver warm Roll neck dollar with newly redesigned neck closure and smooth skin seal provides a better water barrier and increased comfort Molded rubber shoulder pads help hold BC in place, pad diver&';s shoulders and prevent suit wear The Tempo XT incorporates our patented Merino lining and high stretch elastiprene materials, providing the ultimate in warmth and comfort.