Waterproof Vest - 3D Mesh Man Introducing a new, unique thermo Mesh Vest based on the Patented D1 ISS Hybrid, Waterproof takes one more step as overall leader in the drysuit diving community.The extraordinary performance Formula WP 3D Mesh Vest features triple-layer insulation in front of the torso and spine pad. It includes an extra-long back panel that covers the kidneys and the panels that are normally squeezed by the weight belt.The Formula WP 3D Mesh Vest has 2X3mm Double layer stretch 3D mesh and an extra support of 5mm, 70 Denier 3D Mesh from the D1 Hybrid. This provides an 11mm “air bubble” of constant volume insulation around the front and back of the entire torso as well as cool ventilation on the surface and super insulation when submerged. It zips at the front with a YKK #5 zipper. Waterproof Vest - 3D Mesh Man