Fourth Element Men's X-Core Vest

The physiological response to cold stress is to reduce blood flow to the periphery and look after the body core, where it can often just be a matter of time before cold becomes the limiting factor in the safety and enjoyment of a dive. X-Core provides extreme thermal protection to the core, enabling longer, more comfortable dives.

Designed to be worn under an Arctic, Halo A°R or any other drysuit undergarment, X-Core augments thermal protection to the extent that electric heating can be avoided in many instances. It performs best over a lightweight baselayer such as J2 or Xerotherm but the X-Core can also be worn as a next to skin garment for critical core protection.

Description

The sleeveless design of the vest minimises impact on buoyancy and overall bulk especially in the shoulders and arms where freedom of movement is critical. The four-way stretch fabric combined with long body design ensures a snug fit, minimising cold points. The additional chest panel helps to minimise the rush of cold air from the inlet valve and provides extra thermal protection in a key exposure area. The fast wicking fabric moves perspiration towards the outer surface, keeping the wearer drier and warmer.

Getting your gear right can make or break a dive! We’re here to explain baselayers, undersuits, and what to wear for certain dive conditions, along with some hints and tips along the way.

Key Features

• Exceptional warmth
• Contains 76% recycled polyester
• Four-way stretch fabric for snug fit
• Perfect next to skin or over a baselayer
• Fast wicking fabric keeps wearer drier and warmer
• Heavyweight
• Polartec® Power Stretch® Blue Sign® and Oeko-Tex® certified
• Odour resistant Machine washable

Fabric & Care

• 92% Polyester / 8% Elastane (76% recycled polyester)
• Machine washable.

Fit

• Slim fit

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.