C-Skins Session 5:4 Back Zip Steamer - Men\'s The Session is the ultimate solution for warmth, fit and flexibility on a budget. Tried and tested Diamond Flex neoprene placed in the upper body combined with the back zip entry and Back Wing Closure gives insane freedom, performance and warmth Features: Diamond Flex neoprene upper body Xtend neoprene lower body Future Fit 2 3D pre bent Dura Flex knee pads Super Seal Glideskin collar Back Zip Entry Back Wing Glued and Blindstitched seams Xtend Isolation critically taped Seamless paddle zones True Thickness Size Chart: