Fourth Element Men's Thermocline Jacket

Thermocline provides a solution for many people who suffer from neoprene allergies either by replacing the traditional wetsuit entirely or acting as a barrier, reducing contact between the skin and the wetsuit itself.*

Perfect for all surface water sports as well as warm water scuba, this is revolutionary thermal protection. Lightweight, neutrally buoyant, machine washable, breathable and hypo-allergenic, the Thermocline full suit combines our experience with high technology fabrics with our passion for life in, on and under the water, to produce a truly versatile lightweight wetsuit system.

The fabric ensures that the wearer is more comfortable when out of the water, during surface sports, or when kitting up for a dive. The inner fleece layer draws moisture away from the skin and wicks through the breathable membrane where it evaporates off the Nylon surface. In the water, the membrane traps a thin layer next to the body and prevents colder water flowing over the body, perfect for surfers, freedivers and scuba divers.

Thermocline dries rapidly, often within an hour or between dives – a quick rinse and a squeeze to get rid of excess water before hanging it up inside out should ensure it is ready for your next adventure.

No more smelly neoprene suits – this wetsuit can be machine washed (we recommend using our Sub-30 environmentally friendly washing liquid). Store it safely with other garments and when packing for vacation there’s no need to worry about potentially damaging the fabric – it can be squeezed into that last remaining space in your luggage without any worries.

*It is our experience that skin allergies to neoprene, whilst rare, are also not caused by a single compound and therefore it is difficult to be certain of preventing a problem. Thermocline has been used with a great deal of success by neoprene allergy sufferers, but it is important to consult with a doctor about any symptoms and possible alternatives.

Description

The convenience of the zip-thru jacket is that it is easy to don and quick to remove. The breathable fabric ensures that it is comfortable whilst preparing to dive and the design allows great freedom of movement along with the ability to unzip a little to keep cool before the dive. Pair this with the leggings to give full length neutrally buoyant thermal protection that dries quickly and is machine washable, meaning that it is always ready for next getting in the water.

Key Features

• Neoprene free
• Outer contains 78% recycled Nylon
• Lightweight
• Wind and waterproof fabric
• Breathable
• Neutrally buoyant
• Machine washable
• Equivalent of 2mm neoprene

Fabric & Care

• Face: 78% Econyl® Regenerated Nylon / 22% Elastane
• Back: 94% Polyester / 6% Elastane
• Machine Wash at 30°C

Fit

• Our Thermocline fabric does not act the same as neoprene, you may find it feels tight out of the water but once in the water it will become looser so a tight fit is important prior to avoid sagging.
• John wears size Medium and is 6’2″ / Chest 42″ / Waist 31″ / Inside Leg 33″

Origin

• Made in Poland, EU

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.