Designed specifically for the coldest waves, the 4/3 Furnace Full Wetsuit is made from lightweight, super flexible, heat-retaining materials like AIRLITE 4D, SMART foam and Graphene Recycler Plus. This chest zip wetsuit for men is constructed with welded, watertight seams and nontoxic glues, to keep the warmth in and the water out. Men's Long Sleeve Full Wetsuit. __Wetsuit Series:__ Furnace Wetsuits. __Exterior Fabric Type:__ AIRLITE 4D - made from recycled P.E.T. fibers & engineered for lightweight flexibility. __Neoprene Foam Type:__ SMART Foam limestone-based with 30% recycled car tires, scrap rubber & oyster shells. __Interior Fabric Type:__ Graphene and Graphene Recycler Plus - the ultimate heat-generating material. __Body Type:__ Long sleeve full wetsuit. __Thickness:__ 4/3mm. __Entry System:__ DryMax Chest Zip to keep water out. __Exterior Seam Detail:__ Power Seam. __Internal Seam Detail: __ Superflex tape keeps the warmth in and the water out. __Additional Seam Detail:__ Seamless back panel and minimal seaming provides maximum comfort and flexibility. __Glue:__ Aqua Alpha water-based nontoxic glues are used exclusively to bond our wetsuit materials.