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The Arctic's two layers of high insulation and low bulk fabric ensure exceptional levels of thermal protection.

Constructed with comfort and utility in mind, the minimalist design provides outstanding performance under closer-fitting neoprene drysuits. In a layering system, the Arctic is also suited for use underneath membrane and trilaminate suits.

Using a combination of fastwicking, high insulation fabrics, the Arctic creates a micro-climate around the diver, keeping the body dry and warm. A high density inner fleece provides superior insulation, with maximum comfort and wicking, whilst the outer layer, which has a water-repellent finish, ensures a snug fit

Probably the world's best selling thermal undergarment is now available in a simple one piece option. Featuring the innovative two layer technology pioneered by Fourth Element, the One Piece Arctic provides a simple solution to the challenges of thermal protection.

The Arctic Socks features secure foot loops that hold it in place when the drysuit is put on. A high waistband minimizes the separation between the top and leggings. Tuck the top into the belt before putting on the drysuit. The lower legs are made up of a single layer to reduce bulk at the ankles, making them easier to put on.

The Arctic Top features secure foot loops that hold it in place when the drysuit is put on. A high waistband minimizes the separation between the top and leggings. Tuck the top into the belt before putting on the drysuit. The lower legs are made up of a single layer to reduce bulk at the ankles, making them easier to put on.

The Arctic Top features secure foot loops that hold it in place when the drysuit is put on. A high waistband minimizes the separation between the top and leggings. Tuck the top into the belt before putting on the drysuit. The lower legs are made up of a single layer to reduce bulk at the ankles, making them easier to put on.

The Argo Dry Bag features high frequency welded, waterproof seams and a zip-less design in a rugged, hardwearing 500D fabric. At 44 litres it is large enough for a drysuit and undersuit, or everything you need for an adventurous weekend away.

Bucket hats are perfect for life outdoors, keeping the head, neck and face protected from the sun and shielding you from downpours. Lightweight and quick drying with a silicon and faux suede branded badge, this soft hat is made from recycled plastic bottles, reducing the amount of plastic entering our oceans.

The changing mat is large enough to be a really useful addition to any diver’s kit with ample room for changing, but extremely packable. Made using the same hardwearing fabric as the bag, the mat can be rolled up and secured using attached elasticated loops.

Printed in the UK using water-based inks on 100% organic, GOTS certified cotton. Packaged without plastic.

Printed in the UK using water-based inks on a recycled polyester/organic cotton garment. Packaged without plastic.

Suitable for diving or snorkelling, this fourth element snorkel includes a splash guard and soft silicone mouthpiece. To take anywhere your adventure takes you.

How to attach your snorkel to a fourth element mask strap

Once you have attached the strap to your mask, taking the second triglide clip on the strap, pull a small amount of the elastic strap through the buckle to create a little loop big enough to push your snorkel through and tighten to secure it in place.

Adventurous diving is always going to need the right equipment to transport your gear. Designed to carry a wetsuit and other essentials, the Drypack is versatile and rugged enough to go with you wherever your diving takes you.

Built for the most rugged adventures, the Expedition Duffel Bag is designed with input from our intrepid dive team to meet the demands of explorers and divers everywhere. Crafted from heavy-duty mesh PVC with a double-lined, hard-wearing base, this bag is as tough as the environments you'll use it in.

Shaped, adjustable, padded rucksack carry straps make carrying ultra comfortable, and the removable straps allow for seamless transitions—perfect for navigating airport conveyor belts.

Built for the most rugged adventures, the Expedition Duffel Bag is designed with input from our intrepid dive team to meet the demands of explorers and divers everywhere. Crafted from heavy-duty mesh PVC with a double-lined, hard-wearing base, this bag is as tough as the environments you'll use it in.

Shaped, adjustable, padded rucksack carry straps make carrying ultra comfortable, and the removable straps allow for seamless transitions—perfect for navigating airport conveyor belts.

The fourth element freediving snorkel is designed to float and fold away. Suitable for any freediving or snorkel adventure. From recreational to competitive freedive, the simplified design of this freedive snorkel means your kit is streamlined and low bulk.

This collection is inspired by tropical destinations waiting to be explored; colourful reefs, deep captivating lagoons and endless possibilities for adventure, with a focus on sporty fits that make you feel confident, comfortable and ready for the water.

Our swimwear are made using ECONYL® recycled nylon from fishing nets and other discarded consumer waste.

For use under drygloves or wet mitts. 1.5mm hydrofoam provides the confidence that in case of dryglove failure they will retain and provide thermal protection.

Our Gulper insulated lid is a handy, flexible carry option for our Gulper bottle collection. The stainless steel pivoted handle allows movement when in motion and offers excellent temperature control.

Every adventurer needs a canteen of water. The Gulper is more than just your everyday water bottle though. Stainless steel double wall vacuum insulation means that iced drinks stay cool for up to 24 hours and a hot drink will stay that way for up to 12 hours. Every time you refill this bottle instead of buying bottled water (look out for refill stations cropping up everywhere) you are helping to reduce the production of plastic waste which may end up in landfill or our oceans. The versatile lid means you can drink on the go thanks to the twist and sip valve and the wide aperture makes filling and cleaning quick, simple and spill-free.

Every adventurer needs a canteen of water. The Gulper is more than just your everyday water bottle though. Stainless steel double wall vacuum insulation means that iced drinks stay cool for up to 24 hours and a hot drink will stay that way for up to 12 hours. Every time you refill this bottle instead of buying bottled water (look out for refill stations cropping up everywhere) you are helping to reduce the production of plastic waste which may end up in landfill or our oceans. The versatile lid means you can drink on the go thanks to the twist and sip valve and the wide aperture makes filling and cleaning quick, simple and spill-free.

With the classic construction of two layers of high insulation, low bulk fabric, the Arctic hat is seriously warm. Warm enough for Doug Allan on the BBC's Operation Iceberg.

Designed to be easy to don over the top of the Helios full suit, this shortie brings classic designs to new materials. The offset full length YKK zip makes donning and doffing the suit easy and stretch neoprene ensures a body hugging fit maximising the additional thermal protection for the body core. Easy to read size information is colour coded on the arm making suits easy to find on the rack if you are using for a dive school.

Waterproof outer with thermal inner lining provides excellent warmth.

What to wear when scuba diving?

Download our Layering Guide!

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.

The Hydro suit provides all over protection from UV and most ‘stingers’. Made with heavy grade high quality Lycra®, it has UPF of 50+ when dry, and over 30 when wet. It is the perfect dive skin for tropical waters, or for wearing under a wetsuit to ease donning and doffing.

The Hydro suit provides all over protection from UV and most ‘stingers’. Made with heavy grade high quality Lycra®, it has UPF of 50+ when dry, and over 30 when wet. It is the perfect dive skin for tropical waters, or for wearing under a wetsuit to ease donning and doffing.

With outstanding wicking performance from a unique fabric, the OceanPositive J2 neck snug is perfect for rapidly wicking perspiration away from the skin to keep you warm and dry.

The Silver ion antibacterial fabric prevents bacteria from growing and provides odour control while reducing the risk of skin infections developing during long periods of use.

The Arctic's two layers of high insulation and low bulk fabric ensure exceptional levels of thermal protection.

Constructed with comfort and utility in mind, the minimalist design provides outstanding performance under closer-fitting neoprene drysuits. In a layering system, the Arctic is also suited for use underneath membrane and trilaminate suits.

Using a combination of fastwicking, high insulation fabrics, the Arctic creates a micro-climate around the diver, keeping the body dry and warm. A high density inner fleece provides superior insulation, with maximum comfort and wicking, whilst the outer layer, which has a water-repellent finish, ensures a snug fit.

The Arctic’s two layers of high insulation and low bulk fabric ensure exceptional levels of thermal protection.

Constructed with comfort and utility in mind, the minimalist design provides outstanding performance under closer-fitting neoprene drysuits. In a layering system, the Arctic is also suited for use underneath membrane and trilaminate suits.

Using a combination of fastwicking, high insulation fabrics, the Arctic creates a micro-climate around the diver, keeping the body dry and warm. A high density inner fleece provides superior insulation, with maximum comfort and wicking, whilst the outer layer, which has a water-repellent finish, ensures a snug fit.

The Warmest dive wetsuit on the market

The Proteus II is the highest performing dive wetsuit on the market. Available in 3mm and 5mm, the Proteus II is often the benchmark to which other dive wetsuits are compared in terms of warmth. Our wetsuits are made using a greener and more eco-friendly limestone neoprene with Eco Carbon Black which uses scrap rubber tyres cutting C02 emissions by 200g per wetsuit. We also use water-base Aqua-X glues in lamination and construction of our neoprene suits meaning we’ve eliminated the use of harmful substances.

The Warmest dive wetsuit on the market

The Proteus II is the highest performing dive wetsuit on the market. Available in 3mm and 5mm, the Proteus II is often the benchmark to which other dive wetsuits are compared in terms of warmth. Our wetsuits are made using a greener and more eco-friendly limestone neoprene with Eco Carbon Black which uses scrap rubber tyres cutting C02 emissions by 200g per wetsuit. We also use water-base Aqua-X glues in lamination and construction of our neoprene suits meaning we’ve eliminated the use of harmful substances.

Super-lightweight Dry-Sac with roll top closure, ideal for keeping equipment dry thanks to waterproof taped seams. Helps to compartmentalise and organise gear within larger bags and luggage systems.

Super-lightweight Dry-Sac with roll top closure, ideal for keeping equipment dry thanks to waterproof taped seams. Helps to compartmentalise and organise gear within larger bags and luggage systems.

Super-lightweight Dry-Sac with roll top closure, ideal for keeping equipment dry thanks to waterproof taped seams. Helps to compartmentalise and organise gear within larger bags and luggage systems.

Super-lightweight Dry-Sac with roll top closure, ideal for keeping equipment dry thanks to waterproof taped seams. Helps to compartmentalise and organise gear within larger bags and luggage systems.

The traditional halter-neck swimsuit is updated with a tie under the back clasp to ensure the best fit for the wearer. Block colour panelling gives this one piece a retro feel.

Read more about OceanPositive here.

The Aquanaut freediving mask features a new design of silicone skirt which has been developed to fit as many face shapes as possible from a single design.

The low volume freediving mask, whilst compact in size, offers a surprisingly wide field of view, making this not just great for freediving, but a very capable all-purpose mask. It is fitted with a moulded silicone strap which is interchangeable with a fourth element 100% recycled mask strap (sold separately).

Zero plastic packaging

We set out to reduce and remove all plastic waste from all our masks. Instead of packaging our freediving mask in traditional hard plastic cases, we’ve opted for a zero plastic, low volume mask case.

The Aquanaut freediving mask features a new design of silicone skirt which has been developed to fit as many face shapes as possible from a single design.

The low volume freediving mask, whilst compact in size, offers a surprisingly wide field of view, making this not just great for freediving, but a very capable all-purpose mask. It is fitted with a moulded silicone strap which is interchangeable with a fourth element 100% recycled mask strap (sold separately).

Zero plastic packaging

We set out to reduce and remove all plastic waste from all our masks. Instead of packaging our freediving mask in traditional hard plastic cases, we’ve opted for a zero plastic, low volume mask case.

The Seeker mask was designed with two main objectives: maximise the diver’s field of vision to be as close as possible to the experience of not wearing a mask using a single lens and to fit everyone – well, nearly everyone. New facial geometry was combined with a soft silicone skirt to provide an outstanding and comfortable fit.

The low volume design allows easy equalisation and mask clearing as well as creating a visual experience which is wider and brighter than ever before – with a near natural field of vision.

The Seeker mask was designed with two main objectives: maximise the diver’s field of vision to be as close as possible to the experience of not wearing a mask using a single lens and to fit everyone – well, nearly everyone. New facial geometry was combined with a soft silicone skirt to provide an outstanding and comfortable fit.

The low volume design allows easy equalisation and mask clearing as well as creating a visual experience which is wider and brighter than ever before – with a near natural field of vision.

The fourth element mask strap has been made using 100% recycled materials; The elasticated strap is made using rubber and recycled nylon; the clips are made from recycled waste ABS (Acrylonitrile butadiene styrene) plastic from the automotive industry.

The clips have been designed so that they will fit most mask buckles, and will fit all fourth element masks.

How to attach your snorkel to a fourth element mask strap

Once you have attached the strap to your mask, taking the second triglide clip on the strap, pull a small amount of the elastic strap through the buckle to create a little loop big enough to push your snorkel through and tighten to secure it in place.

The Arctic's two layers of high insulation and low bulk fabric ensure exceptional levels of thermal protection.

Constructed with comfort and utility in mind, the minimalist design provides outstanding performance under closer-fitting neoprene drysuits. In a layering system, the Arctic is also suited for use underneath membrane and trilaminate suits.

Using a combination of fastwicking, high insulation fabrics, the Arctic creates a micro-climate around the diver, keeping the body dry and warm. A high density inner fleece provides superior insulation, with maximum comfort and wicking, whilst the outer layer, which has a water-repellent finish, ensures a snug fit.

The Arctic's two layers of high insulation and low bulk fabric ensure exceptional levels of thermal protection.

Constructed with comfort and utility in mind, the minimalist design provides outstanding performance under closer-fitting neoprene drysuits. In a layering system, the Arctic is also suited for use underneath membrane and trilaminate suits.

Using a combination of fastwicking, high insulation fabrics, the Arctic creates a micro-climate around the diver, keeping the body dry and warm. A high density inner fleece provides superior insulation, with maximum comfort and wicking, whilst the outer layer, which has a water-repellent finish, ensures a snug fit

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.

Part of our OceanPositive Collection, these new Hydro-T rashguards are designed to be worn under a wetsuit or semi-dry suit or as a UV shield for all water sport activities.

The fit of these rashguards has been improved with flattering panels, kept streamlined with flatlocked seams. Presented in a palette of classic and ocean inspired colours with water-based prints on chest and back in complementary, contrast tones.

The ultra smooth fabric made with a combination of recycled polyester and stretchy elastane reduces friction between the skin and a wetsuit and helps to stop chafing from tight/ill-fitting suits.

Part of our OceanPositive Collection, these new Hydro-T rashguards are designed to be worn under a wetsuit or semi-dry suit or as a UV shield for all water sport activities.

The fit of these rashguards has been improved with flattering panels, kept streamlined with flatlocked seams. Presented in a palette of classic and ocean inspired colours with water-based prints on chest and back in complementary, contrast tones.

The ultra smooth fabric made with a combination of recycled polyester and stretchy elastane reduces friction between the skin and a wetsuit and helps to stop chafing from tight/ill-fitting suits.