Using Guls 150% stretch neoprene and thermal linings the Response FX suit can really help your surfing style. Product Information: Product Code: RE1240-BKLI Blind Stitched Seam Construction X-Flex 150% Super Stretch Main Body X-Flex Thermal Lining Ultimate Insulation & Warmth FX:Lite Silky Smooth Hydrophobic (Doesnt hold H2o) Material Back Panel for Wind Chill Protection PowerTex4 Knees for Flexibility & Durability ABS Salmi Zip Aqua Barrier Chest Entry Revo Fit 3D Pattern Technology G-Tape Inner Waterproof X-Flex Taping Fuses Seams Together for Additional Reinforcement Pro Neck Seam Free Neck Seal Lower Calf Key Pocket with Key Loop Non-Petroleum Based Neoprene