Fourth Element Men's XCore Vest

Fourth Element's answer to the electrically heated vest or undergarment. Utiltizing the body’s own heat output and retaining it, weight for weight the X-Core is Fourth Element's warmest undergarment yet. Pair it with an Arctic, Halo 3D or Arctic Expedition to experience warmth without batteries or wires. The physiological response to cold stress is to reduce blood flow to the periphery and look after the body core, where it can often just be a matter of time before cold becomes the limiting factor in the safety and enjoyment of a dive. X-Core provides extreme thermal protection to the core, enabling longer, more comfortable dives. Designed to be worn under an Arctic, Arctic Expedition, Halo 3D or any other drysuit undergarment, X-Core augments thermal protection to the extent that electric heating can be avoided in many instances. It performs best over a lightweight baselayer such as J2 or Xerotherm but the X-Core can also be worn as a next-to-skin garment for critical core protecti