WARMTH & STRETCH 100% Natural Stretch  FSC certified Natural Rubber- the lightest weight" warmest & stretchiest  100% neoprene free bio based foam available. Dope Dyed Fabric- Softer" eco-friendly" anti-fade stretch jersey laminated with AquaA eco-friendly water-based lamination is completely solvent free.   Made by Bluesign approved mills. FIT Tailored fit with minimal seams for unrestricted performance and warmth. DURABLE & WATER TIGHT Tripled glued" blind stitched seams.  Chest-zip entry" minimal bulk with contoured watertight design.  Easy access secure key cord.  Glideskin on the neck seals to skin to prevent flushing.