The Equation Hood 3mm is the perfect eco-friendly surf hood to keep you warm in cold water. It is made with Eicoprene technology, a non-petroleum based synthetic foam derived from a mix of oyster shell powder, limestone, and recycled tires. To laminate the recycled polyester lining, Aqua-A, a solvent-free water-based glue with no harmful chemicals, is used. The hood features an adjustable face opening with elastic cord, glued, blind-stitched, fully-taped seams (GBS) for ample stretch when in the water, and dries quickly between two sessions. Adjustable face opening with elastic cord Brim hood Glued and blindstitched construction (GBS) 3 mm Bluesign approved, Global Recycled Standard (GRS) Weight 160 g Materials Main Fabirc: Picture Eicoprene Fabric Materials: 78% eicoprene, 11% recycled polyester, 9% recycled nylon, 2% spandex