Features Neoprene: StretchFlight 2 neoprene for increased warmth and comfort without sacrificing flexibility Thermal Smoothie durable textured neoprene, retains heat and blocks wind [chest and back] 24% less CO2 emissions per wetsuit Limestone-derivate eco-friendly neoprene made from scrap rubber tires and Bluesign® certified Thermal lining: WarmFlight® thermal fleece lining keeps body heat in and water out [chest] Seams: Triple glued and blind stitched [GBS] seams reduce sew-throughs and water entry StretchFlight 3 Taped internal seals makes all seams watertight Water-based glue used for lamination Recycled polyester and nylon used for linings Entry system: Back zip entry system with YKK® #10 plastic zip Supratex knee pads - durable, lightweight and flexible Glideskin neck seal Hydrowrap x2 adjustable neck closure with hydrosheild water barrier Composition 88% Recycled Polyester, 12% Elastane