All the protection you need, plus all the flexibility you could want. Ultra durable, the Everyday Sessions 4/3 Long Sleeve Wetsuit offers advanced cold water blockage with a back zip and eco-friendly neoprene. Lots of flex and stretch is here too with a lightweight feel that won't drag you down.• Thickness: 4/3mm• Eco-Conscious Performance Neoprene Foam: StretchFlight Eco-Neoprene for increased warmth and comfort without sacrificing flexibility where you need it and durability where it counts• Eco-Conscious Lining: WarmFlight Eco-Velvet zoned comfortable lightweight thermo lining - repels water to decrease weight and drying time to keep body heat in and water out• Hydroshield Water Barrier• External Seams: Triple glued and blind stitched (GBS) seams reduce sew-throughs and water entry• Internal Seams: Taped internal seams in critical zones• Entry: Back zip entry• Eco-Conscious Lamination: AquaGlue, water-based lamination• Additional Details: Key loop• Composition 83% Nylon, 17% Elastane Internal Seams: Taped internal seams in critical zones Entry: Back zip entry | Men's Quiksilver Everyday Sessions 4/3 Back Zip Wetsuit