Foam: F'n LITE neoprene made with air cell-rich limestone for lightweight warmth Thermal Smoothie durable textured neoprene, retains heat and blocks wind WarmFlight® Far Infrared x2 thermal lining - mineral-enriched fibres retain body heat while our Diamond Deluxe material maximises stretch and traps air against the skin for added warmth GBS (glued and blind stitched) seams for maximum flexibility and minimal water entry Hydroshield Sound Effect ear inserts - a breathable and waterproof neoprene for improved hearing while keeping water out Suitable for suggested water temperatures of 8°C - 12°C / 46°F - 53°F 2mm Marathon Sessions - Neoprene Surf Hood for Men