Aqua Lung Men's 5mm AquaFlex WetsuitNot too hot, not too cold, the 5mm AquaFlex wetsuit provides comfort in a wide range of ocean temperatures. The name AquaFlex has become synonymous the world over for stretch, comfort, and warmth. The 5mm AquaFlex men's wetsuit represents the highest quality on the market. All AquaFlex suits are made of four way stretch neoprene, liquid rubber sealed seams for warmth and durability and a host of other special features that make them ideal for scuba.