WARMTH & STRETCH I-Foam neoprene - the lightest weight warmest & stretchiest limestone based neoprene available; significantly less weight enhanced flexibility and superior comfort. Body & Hood Thermal & Quick dry Brain Fuzz lining insulates heat and dries fast. Dope Dyed Fabric - a softer eco-friendly anti-fade stretch jersey made by Bluesign approved mills Aqua Alfa - water based eco-friendly jersey lamination. FIT. Tailored fit - anatomically correct engineered body lines allow for unrestricted performance and warmth. DURABLE & WATERTIGHT. Chest-zip entry minimal bulk with contoured water tight design. Tripled glued seams. Vissla super stretch Neo 2.0 tape allows for maximum seam sealing while having unrestricted stretch and comfort. Smoothy Panels - Wind & water-repellent - Smoothy panels on the back acts as a barrier against the cold where it's needed the most. Easy access secure key cord. Knee pad Upcycled Supratex abrasion resistant for flexibility and strength. Glideskin on the neck seals to skin to prevent flushing.