Typhoon Storm 3mm Long Johns - Men'sTyphoon Storm 3mm Long Johns Men's The Typhoon Mens Storm 3mm Long Johns are designed for men who spend long days in the water and want both warmth and freedom of movement. Constructed from 3mm neoprene with flatlock seam construction, they provide lightweight insulation while standing up to regular use in coastal and watersports environments. T Flex stretch panels on the upper body and crotch allow natural movement, so paddling, swimming, or