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Ultimate Long John 4mm men
80% M-Flex 4mm neoprene long john developed using our latest material and technology to create our best winter long john yet. It features a polar lining combined with 70% M-Flex neoprene for maximum stretch and comfort designed to crossover the necessities of flexibility and warmth. Combine with the Ultimate 3mm Neoprene Top for all over protection from the cold.