Designed for the most demanding cold-water dives, the Fourth Element X-Core is a high-performance thermal vest engineered to enhance warmth and comfort under your drysuit system. Ideal for use over a base layer like Xerotherm or J2, the X-Core acts as a powerful mid-layer, delivering exceptional insulation where you need it most — across the core.
Constructed with advanced fleece insulation and strategically placed panels, the X-Core retains body heat while maintaining breathability and flexibility. Its sleeveless design avoids bulk under the arms and preserves full range of motion, making it perfect for both recreational and technical divers tackling longer, colder dives.
Part of Fourth Element’s modular thermal system, the X-Core vest helps reduce the need for heavier undersuits while improving overall comfort, especially on repetitive or deep dives. Stay warmer for longer with the intelligently designed Fourth Element X-Core — trusted by expedition divers worldwide.
