The Vaikobi Flex Force 2mm Mens Top 
 
Super stretch 2mm engineered neoprene for movement and comfort
GBS Bonded Seam construction for stretch and durability (GBS Seams stop water coming in and are more durable. Only premium suits have this)
Rip-stop fabrication
Airprene underarm panels for controlled insulation
Reflective thermal titanium layer reflects body heat
Quick Dri plush fleece lining in torso for extra warmth
3D Ergonomic cut for performance