Halo AR Women
✓ highly advanced thermal technology | ✓ HALO A°R's achieves extreme thermal protection | ✓ thinner, less buoyant
Aktuelle Aktion (bis 30.09.2026): Beim Kauf dieses Halo A°R erhältst du das passende Damen J2 Baselayer-Set (Top + Leggings) gratis dazu. Mehr erfahren: Halo A°R + J2 Set Aktion.
The Fourth Element Women's Halo A°R (Halo AR) is a drysuit undersuit insulated with A°RGON™, a form of aerogel developed for spacecraft and cryogenics. It provides extreme thermal protection compared to a thinner, less buoyant garment. Body-mapped insulation, an offset chest zip with baffles, thumb loops, foot stirrups, and a P-valve-ready pocket make it a cold-water undersuit you can wear in total comfort, all day.
What is the Fourth Element Women's Halo A°R?
The Fourth Element Women's Halo A°R is a one-piece drysuit undersuit built around A°RGON™ aerogel insulation. Fourth Element describes A°RGON™ as one of the most insulating materials ever developed. The result is a thinner, less buoyant undersuit that still delivers extreme thermal protection for drysuit diving.
Incorporating highly advanced thermal technology, the Halo A°R's performance exceeds expectations of any diving undersuit. It combines the A°RGON™ insulation layer with a wind and water-repellent stretch outer layer, so it works as your main insulating layer under a drysuit.
Fourth Element Size Charts – Full (Excl. Argonaut)
All measurements in CM. Expand sections below. Swipe tables sideways on mobile. Ranges stay on one line.

About A°RGON™
A°RGON™ is an advanced form of Aerogel originally developed for spacecraft and cryogenic insulation due to its exceptional thermal properties. This high-performance material allows the HALO A°R undersuit and thermal diving gloves to provide superior insulation while remaining thinner and less buoyant than traditional options.
Halo AR Socks
With phenomenal insulation properties, this material enables the HALO A°R socks to achieve extreme thermal protection from a thinner, less buoyant combination of fabrics. With a wind and water-repellent stretch outer layer, these socks can be worn in total comfort, all day.
Zipper for ease donning
Low Bulk
Extreme thermal insulation
Halo Ar Gloves fourth element
Built for divers who get cold hands fast or dive in seriously cold water, these Halo AR liners use ARGON aerogel to deliver some of the warmest protection you can wear without the bulk. Worn under your drysuit gloves, a wind- and water-repellent, 4-way stretch outer layer keeps you comfortable through the longest, coldest dives.


















