Fourth Element Xerotherm Men's Top X-Large

The Ultimate Baselayer for Drysuits
The Xerotherm Long Sleeve Top is the ideal men's thermal diving top for use under a drysuit. Crafted with Polartec Powerstretch, originally developed for NASA, the Xerotherm top traps a layer of air next to the skin, providing superior insulation compared to water. This keeps divers drier and more comfortable. It can be worn under another undersuit or on its own beneath a neoprene drysuit.

Superior Moisture Wicking
The unique knit of the Xerotherm fabric delivers the fastest wicking effect among all Fourth Element products. Moisture is drawn through fine fibres and spreads over the outer surface, maintaining a thin air layer next to the skin. This high-performance wicking is so effective that some divers report not noticing minor suit leaks until after their dive.

Tested and Approved by Professionals
The Xerotherm men's top has been rigorously tested in extreme conditions by professionals. Renowned underwater filmmaker Doug Allan praised its performance in -2 degree (29F) water inside the Arctic Circle while filming for the BBC's The Blue Planet. This thermal undergarment for men is also specified by the FBI Dive Teams, Norwegian Navy, and British Police Diving Units for its reliability and effectiveness.

Designed for Maximum Comfort
With flat seams and a long body to prevent separation between the top and leggings, this top is the ideal next-to-skin layer under a drysuit. Thumb loops keep the sleeves in place while donning the drysuit and can be easily removed before diving. This men's diving thermal wear is lightweight, low bulk, and buoyant, making it perfect for various dive conditions.

Technical Details and Practical Tips
Getting your gear right can make or break a dive. Fourth Element provide insights on baselayers, undersuits, and what to wear for specific dive conditions, along with helpful hints and tips to enhance your diving experience.