Billabong Boys 8 16 4/3Mm Furnace Natural Chest Zip Steamer Wetsuit (Black)product: long sleeve fullsuit collection: furnace collection fabric: airlite 4d 20% more stretch exterior fabric 100% upcycled graphene combined with graphene comp interior fabric foam type: natural rubber blend made from 85% natural rubber and 15% synthetic additives composed of upcycled bolderblack and soybean oil 100% neoprene free body type: long sleeve full suit thickness: 4 3mm thickness entry system: chest zip entry system exterior seam detail: