The contour cut on the Reef Ladies 4/3 Arctic Wetsuit allows for a better fit, with increased movement around the arm and shoulder areas. The Ladies Arctic is made from 100% S-Flex Limestone Neoprene rubber. The S Flex Jersey adds for flexibility and added warmth. All the seams are GBS with spot neoprene Nylon II taped seams for a increased seal. The S-Tex Knee pads give you greater flexibility and strength on your knees.