Fourth Element Halo AR Drysuit Undersuit

The Fourth Element Halo AR sets a new standard in cold-water thermal protection, incorporating advanced technology and one of the most insulating materials ever developed for diving undersuits.

Featuring ARGON aerogel insulation — a material originally designed for space exploration and cryogenics — the Halo AR delivers phenomenal warmth with minimal bulk and buoyancy. Its compression-resistant design ensures reliable insulation even at depth, offering extreme thermal performance in a thinner, more streamlined profile.

Built for all-day comfort, the Halo AR includes a wind- and water-repellent stretch outer layer, thumb loops, and foot stirrups. Thermal imaging technology was used during design to optimise insulation coverage, focusing warmth where divers need it most.

An offset chest zip and internal baffles help retain torso heat when in horizontal trim. ARGON aerogel panels protect the body from shoulders to knees, with targeted reinforcement in critical areas for warmth without restricting mobility.

For convenience, the Halo AR features a two-way zipper for easy P-valve routing on either the left or right side, making it ideal for technical and expedition divers.