Fourth Element introduced its newest and warmest undergarment ever, the X-Core thermal vest, at DEMA Show 2017.
The new garment is made from 76 percent recycled plastic; it is also fully BlueSign and Oeko-Tex certified.
The X-Core features a sleeveless design that maintains core warmth while giving you the maximum freedom of movement. Made from a heavyweight Polartec power stretch fabric, the snug-fitting X-Core provides significant warmth. It combines perfectly with any other drysuit undergarment, and can easily be worn under Fourth Element Arctic, Arctic Expedition, and HALO 3D under suits.
According to research, the human body has the same power output as a 100W light bulb, with all the heat that can generate. The X-Core is specifically designed to trap and retain as much of the heat as possible, thereby providing maximum warmth while eliminating the need for heated vests.
The X-Core retails for US$149.90/~127 Euros. For more info, check out the Fourth Element website.