Fourth Element Women’s Halo A°R Drysuit Undersuit
- Extreme thermal protection with A°RGON™ aerogel insulation
- Bodymapped design for optimal warmth without bulk
- Wind and water-repellent stretch outer layer
- P-valve ready with two-way fly zipper and leg pockets
- Comfortable thumb loops and foot stirrups for easy drysuit donning
- Offset chest zip minimizes heat loss in horizontal trim
- Machine washable for easy care
The Fourth Element Women’s Halo A°R undersuit redefines thermal protection for drysuit diving, incorporating A°RGON™ aerogel, one of the most insulating materials ever developed, originally created for space exploration. This phenomenal insulation allows the Halo A°R to deliver extreme warmth from a thinner, less buoyant garment, crucial for maintaining comfort and maneuverability during long or cold dives, including technical, cave, and CCR expeditions. Utilizing bodymapping principles, a layer of A°RGON™ protects the core from shoulders to knees, with other critical areas also benefiting from this enhanced insulation without compromising mobility. The wind and water-repellent stretch outer layer provides additional protection, while features like comfortable thumb loops, foot stirrups, an offset chest zip to minimize heat loss in trim, and P-valve routing compatibility via a two-way fly zipper enhance its practicality. Zippered leg pockets offer secure storage for small essentials. This undersuit is designed for all-day comfort and exceptional performance, making it a top choice for female divers facing challenging conditions.
Specifications
- Insulation: A°RGON™ aerogel in a compression-resistant matrix
- Outer Layer: 83% Polyester, 13% PU, 4% Elastane (wind/water-repellent, stretch)
- Inner Layer: 68% Polyester, 32% Recycled S.Café® Polyester
- Design: Women-specific, bodymapped thermal protection, offset chest zip
- Features: Thumb loops, foot stirrups, P-valve ready (two-way fly zip), zippered leg pockets
- Care: Machine washable
Experience unparalleled warmth and comfort. The Fourth Element Women’s Halo A°R is the ultimate undersuit for serious cold-water diving.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

