Featuring Picture brand new Flex Skin technology, the Equation 4/3 Flex Skin Front Zip is an ultra-stretch, heavy-duty wetsuit for chilly water!  Equation wetsuits are made with the latest Eicoprene technology, a non-petroleum based synthetic foam derived from a mix of oyster shell powder, limestone, and recycled tires. To laminate the recycled polyester lining we use Aqua-A™, a solvent-free water-based glue with no harmful chemicals.