Using a flatlock seam construction the Response from Gul has X-Flex super stretch panels for comfort and a seam free seat seam construction. Featuring highly durable Powertex4 knees (except Shorti) to ensure increased lifespan. The Response meets all the requirements for the all round water sports enthusiast. Product Information: • Product Code: RE1323S20-NAPI • Flatlock Seam Construction • X-Flex 150% Super Stretch Main Body • D-Flex Durable Lower Body Panels • PK Easy Entry Back Zip System • PowerTex4 Knees for Flexibility & Durability • Pro Neck Seam Free Seal • Mesh Chest & Back to Prevent Wind Chill • Non-Petroleum Based Neoprene