O'Neill Men's Psycho Tech 5/4mm+ Chest Zip Full Wetsuit w/Hood - Black - New

Built with high-performance neoprenes that incorporate recycled fibers in the liner fabrics, this suit is designed to retain heat while minimizing water entry. TB4 Firewall technology radiates and recirculates body heat, while TB4 Duraskin Air Firewall panels in the chest and back provide enhanced wind resistance and thermal insulation.

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