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What to wear when scuba diving – layering made easy. Download our free guide

Women’s Halo A°R

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A°RGON™ is a form of Aerogel developed for insulation in space crafts and cryogenics due to its superior insulation properties. Traditionally this material is created by removing the liquid from a gel and replacing it with air, which creates a lightweight, hollow and flexible structure. When we tested it more than 10 years ago it crushed and disintegrated. A°RGON™ is a foam embedded version of this which allows it to function in a diving context.

With phenomenal insulation properties, this material enables the HALO A°R to achieve extreme thermal protection from a thinner, less buoyant diving undersuit. With a wind and water-repellent stretch outer layer, comfortable thumb loops and foot stirrups, this is a garment which can be worn in total comfort, all day.

I’m really enjoying the new Fourth Element Halo AR undergarment. The flexibility and comfort is like a cozy hug and it is less buoyant than the old Halo!


The warmest suit I’ve ever worn. It’s not like any suit I’ve ever worn, not just in looks, but in performance and feel as well.


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