Fourth Element's X-Core range is specially designed to provide extreme thermal protection to the core of the body, preventing the body's physiological response to cold of sending all of your blood to your core and away from your extremities. This enables longer, more comfortable dives in even the most extreme conditions. 

The X-Core Vest minimises bulk in the shoulders and arms allowing more movement, and helping reduce effects on your buoyancy. The long body design and stretch material ensures a snug fit helping to retain even more heat within the body. The extra chest panel ensures core warmth, with fast wicking material moving moisture away from the skin to ensure the user stays dry and warm. 

This vest is designed to be worn underneath Arctic, Halo or any other drysuit undergarment and performs best on top of a thin base layer such as the J2 or Xerotherm layers, however it can be worn next to the skin and will still provide excellent thermal protection.