The Quiksilver Marathon Sessions 4/3 Chest Zip Wetsuit delivers cold water performance with flexible warmth and an eco focused build. Champion Stretch exterior fabric combines recycled nylon and elastane with Stretch Flight Eco neoprene foam for mobility and insulation, while the PrimaLoft® Warm interior lining helps retain heat with a lightweight feel. A horizontal front zip limits water entry, Power Seam construction with interior reinforcement tape improves durability, and Aqua Alpha water based glue supports a long sleeve full suit designed for reliable 4/3mm protection.