O'Neill's Blueprint range offers mind-boggling minimal seams, flexibility, and warmth. The legacy of innovation continues with the latest exclusive eco-friendly TB4 materials and our most minimalistic panel design yet. The Blueprint uses the ultra-warm and stretchy TechnoButter 4 Firewall to introduce full coverage, including arms, body, and low legs. Our warmest, highest performing sustainable wetsuit to date. F.U.Z.E. Closure (Chest Zip) Redzone Water Resistant Zipper 360 degree Barrier With Drainholes and Anti-Flush Barrier (F.U.Z.E.) Tapered Cuffs with Plasma Wrist and Ankle Seals Recycled Oyster Shells and Eco Carbon Black Infused Neoprene Recycled Dope-Dyed Yarn Jersey Aqua Alpha Solvent Free Neoprene Lamination Key Pocket with Loop Recycled TBX Fully Taped Glued and Blindstitched Seams Chest / Back / Thigh / Butt: TB4 Air Firewall Shins / Calf: TB4 Firewall Sleeves: TB4X Firewall Entry / Shoulders: TechnoButter 4X PLUS (+) = 0.5mm Extra thickness for even more warmth