Fourth Element Men's Halo A°R

Incorporating highly advanced thermal technology and one of the most insulating materials ever developed, the HALO A°R's performance exceeds expectations of any diving undersuit.

Using technology originally created for space exploration and cryogenics, the HALO A°R features the extreme insulation material A°RGON™ aerogel in a compression resistant matrix.

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.

Building on fourth element's experience in thermal protection and bodymapping, the HALO A°R was assessed with thermal imaging cameras to improve and modify prototypes.

The offset chest zip and baffles ensure that heat lost from the torso is minimised when in horizontal trim. All the body from shoulders to knees is protected by a layer of A°RGON™, while other critical areas also benefit from this enhanced insulation without compromising mobility or creating bulk.

The left and right P-valve ports allow for uninterrupted routing while two zippered pockets on the legs provide secure storage for essentials.

Key Features

• A°RGON™ – extreme performance thermal insulation
• Bodymapped thermal protection
• High performance low bulk
• Optimised for horizontal trim
• P-valve ready
• Exceptional warmth
• Water-repellent outer layer
• All-way stretch fabric for snug fit
• Machine washable

Fabric & Care

• Outer: 83% Polyester, 13% PU, 4% Elastane Insulation: A°RGON™
• Inner: 68% Polyester 32% Recycled S.Cafe’ Polyester
• Machine washable.

Fourth Element – ​​diving equipment designed for people and the oceans

Fourth Element is a renowned British diving equipment manufacturer that has been setting new standards in the industry since 1999. The brand was born from a passion for diving and the need to create clothing and equipment that will perform in all conditions – from warm tropical waters to ice and technical diving. Today, Fourth Element is synonymous with innovation, reliability, and an eco-friendly approach to equipment design.

Top quality diving equipment

Fourth Element offers a wide range of products for recreational and technical divers, including:

• Argonaut drysuit – custom-made, using BIOMAP technology and innovative materials.
• Thermal clothing under the drysuit – Xerotherm, Arctic, and HALO lines ensure thermal comfort even in the coldest waters.
• Diving suits – including the Proteus and Xenos series, valued for their durability and excellent fit.
• Masks, fins, snorkels, and diving accessories – designed with functionality and comfort in mind.
• Ocean Positive clothing – made from recycled materials, such as fishing nets recovered from the oceans.

Each product is tested in real-world conditions by divers from around the world – from cave explorers to instructors and professional dive guides.

Sustainable development and ecology

Fourth Element is one of the first diving brands to strongly prioritize sustainable production. The OceanPositive project is a tangible initiative – the brand uses recycled materials (e.g., ECONYL®), eliminates plastic from packaging, and introduces innovative recycled products, such as line markers made from recycled PPE masks. By choosing Fourth Element products, you support the protection of the seas and oceans.

Why choose Fourth Element?

• Highest quality – equipment tested in extreme conditions.
• Ergonomy and comfort – perfect fit, well-thought-out solutions.
• Eco-friendly approach – genuine concern for the environment.
• Professional technologies – used by divers worldwide.
• A wide range of clothing, suits, accessories, and diving equipment.

Fourth Element – ​​equipment for demanding divers

If you're looking for reliable diving equipment that combines modern technology, comfort, and environmental responsibility, Fourth Element is an excellent choice. Join divers worldwide who trust this brand and choose equipment designed by divers, for divers.