Fourth Element Men's Halo A°R UndersuitEngineered with cutting edge thermal technology, the HALO AR redefines whats possible in a drysuit undersuit. Featuring ARGON aerogel insulation, originally developed for space exploration and cryogenics, it delivers exceptional warmth with minimal bulk and buoyancy. Designed for all day comfort, the HALO AR combines a wind and water repellent stretch outer layer with thumb loops and foot stirrups for a secure fit. Fourth Elements bodymapping
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