WARMTH & STRETCH"Everything you need in a wetsuit and nothing you don"t with the ease of a back zip. 100% Super stretch Japanese limestone based neoprene - lighter. warmer. softer. stretchier. easier to put on and take off and allows for more freedom of movement."Thermal lining insulates heat. Dope Dyed Fabric- A softer. eco-friendly and anti-fade made by Bluesign approved mills."quaA eco-friendly water- based lamination is completely solvent free with no harmful chemicals."