Athlete wearing the Advance Thermal wetsuit in black with gold detailing. on model image white background.

Athlete wearing the Advance Thermal wetsuit from the back in black with gold detailing. on model image white background.

close up Athlete wearing the Advance Thermal wetsuit in black with gold detailing. on model image white background.

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Advance Thermal Wetsuit

Name: Advance Thermal Wetsuit
Brand: ZONE3
SKU: WS26MTADV101/S
Price: 349.0 GBP
Availability: InStock
Rating: 5.0 (1 reviews)

A HydroSilk Plush lining sits around the core and the key organs, trapping air against the skin so the heat you generate stays with you. Yamamoto #39 SCS neoprene runs through the shoulders and arms, so the stroke stays free rather than stiffening the way thermal suits often do. Extended arm and leg lengths carry coverage towards the hands and feet, and the Max Seal Rolled Collar keeps more water out than the standard Advance. Built for swimmers and triathletes whose season runs longer than the summer.

Mens

Womens

£349.00

size- S

S ST SM M MT ML L XL XXL

Full Description

Key Features

Tech Specs

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Advance Thermal Wetsuit

WHO IT'S FOR

Swimmers and triathletes who keep going once the water cools. As autumn comes in, the thing that ends a swim stops being fitness and becomes body temperature: get cold and the stroke shortens, the hands stop gripping the water and you are out well before you meant to be. This suit exists to push that point further back.

Open water swimmers carrying the season through autumn and winter
Triathletes training outdoors outside the race season
Swimmers who have found thermal suits too stiff to swim properly in
Anyone whose swim length is decided by warmth rather than fitness

WHERE IT SITS IN THE RANGE

The Advance Thermal is the cold-water option alongside the Advance, with a fleece lining, longer arms and legs and a rolled collar added for warmth. It runs thicker throughout, 2mm to 5mm against the standard Advance's 1.5mm to 4mm. If you swim mostly through spring and summer, the standard Advance is the lighter suit and the better choice; the Advance Thermal earns its place once the water drops and swim length starts being decided by how warm you stay.

KEY BENEFITS

1. You stay warm where it counts. A HydroSilk Plush lining is positioned around the key organs and core muscle groups, trapping a layer of air against the skin so body heat stays close to where it is produced.

2. The swim lasts longer. Extended arm and leg lengths carry coverage further towards the hands and feet, the first places to lose heat and the first to make you stop.

3. Less cold water gets in. The Max Seal Rolled Collar sits closer at the neck than the standard Advance, reducing the flush of cold water that cools you from the inside.

4. Your stroke stays free. Yamamoto #39 SCS neoprene through the shoulders and arms keeps stroke mechanics intact, so the warmth is not paid for in movement.

5. You still move cleanly through the water. SCS coating on the shoulder and arm panels reduces drag to a friction coefficient of 0.021, so the extra material does not cost you speed.

WHAT YOU'LL FEEL

The inside is the first thing you notice: soft against the skin rather than slick, and warm before you have even reached the water. Once you are swimming, the cold arrives more slowly and never quite settles at your core. Your hands and feet stay useful for longer, which is usually what decides when a winter swim ends. Your arms move the way they do in July, so it feels like swimming rather than enduring. Getting out, you are warmer than you expected to be.

WARMTH

Warmth that lasts Cold water pulls heat out of you far faster than cold air does, and it takes it from the core first. The fleece lining sits exactly there, holding a layer of air against the skin so the heat you generate swimming stays with you. Around it the suit runs 5mm through the torso and upper legs and drops to 2mm at the shoulders, arms and gusset, so the thickness sits where the heat goes rather than where you move, and the thickest panels support your body position at the same time. The swim ends when you decide it does. Tech behind it: Heat-Tech Plush Fleece Lining, 2mm to 5mm multi-thickness build, extended arm and leg lengths

COLD WATER OUT

Keeps the cold out Most of the cold in a wetsuit swim arrives through the neck. Water flushes in at the collar, runs down the back and cools you from the inside, which is why a suit can feel warm for ten minutes and cold for the next forty. The rolled collar closes that gap more tightly than the standard Advance. Tech behind it: Double-Sided SCS Rolled Collar

FLEXIBILITY

Stroke stays free Thermal suits usually buy warmth with stiffness, and you feel it in the shoulders within a few hundred metres. Yamamoto #39 through the shoulders and arms keeps the stroke where it should be, and the SCS coating keeps the surface slick through the water. Warmth without the trade. Tech behind it: Yamamoto #39 SCS shoulder and arm panels

Key Features

BUOYANCY AND BODY POSITION

5mm torso and upper leg panels: the thickest zones in the suit run through the core and upper legs, supporting body position through the water as well as warmth.

STROKE MECHANICS

Yamamoto #39 SCS shoulder and arm panels: premium neoprene through the shoulders and arms for unrestricted stroke movement.

SPEED AND DRAG

SCS coating: drag-reducing surface treatment with a friction coefficient of 0.021.

COMFORT AND LINING

HydroSilk Plush Lining: soft internal lining positioned around the key organs and core muscle groups, trapping air to hold body heat.
Max Seal Rolled Collar: rolled neck construction that reduces water entry compared with the standard Advance.
Extended arm and leg lengths: additional coverage towards the hands and feet.

CONSTRUCTION AND MATERIALS

Multi-thickness build: four thickness zones from 2mm to 5mm, thicker than the standard Advance throughout.
SCS upper back and cuff panels: coated panels across the upper back and at the cuffs.

Tech Specs

Buoyancy

Speed

Flexibility

Endurance

Warmth

Durability

FIT GUIDANCE

Getting the right fit

Snug everywhere, restrictive nowhere. You should feel the suit holding your body without pinching at the shoulders or compressing your chest to the point where breathing feels laboured. If you can't take a full breath on land, size up. If there's loose material across the shoulders or chest, size down. Air pockets at the lower back usually mean you need a longer suit, such as an MT (Medium Tall), not a smaller size.

If you're between sizes

Size down if you're racing — a tighter fit gives you more from the suit's buoyancy and reduces water flushing. Size up if you're prioritising comfort for longer open water swims or training sessions where you'll be in the suit for extended periods.

Putting it on

Take your time the first time. Undo the zip fully and fold the top half of the wetsuit down, zip on the back. Start at the ankles and slowly work the neoprene up your legs in sections —don't try to pull from the top. Smooth out any air pockets as you go, particularly around the lower legs and crotch, before pulling the suit up over your torso. Reaching your hands towards the sky and helps to slide the arm sleeves into place. Use the pads of your fingers throughout, never your fingernails. The Silk-X lining will make this easier than most suits, but neoprene always requires patience on the first few wears. It will get easier as the suit breaks in.

What a correct fit feels like

Person wearing a Zone3 wetsuit against a clear blue sky

close up of a Women wearing the Zone3 Advance Thermal Wetsuit and gloves.

Close up of the Zone3 thermal advance hip panel

close up of the back panel of the Zone3 Advance thermal wetsuit. Athlete swimming in open water.

Wetsuit

Comparison Table

Advance Thermal Wetsuit

£349.00

★★★★★(1)

Find Out More

Ratings

Level

Buoyancy

Speed

Flexibility

Endurance

Warmth

Durability

Cold-water specialist

Key Features

Material

Neoprene

Coating

Waterproof Seams

Shoulder Panel

Speed Cuffs

Laser Cut Collar

B.R.E Chest Panel

Yamamoto Aerodome

Sensory Catch Panel

Biorubber

NBR Buoyancy

Lining

Additional Information

Yamamoto #39 & Smoothskin Neoprene

SCS & Speedflo

Slimline

Comfort

Plush Thermal Lining

Overall rating: 5.0 / 5 from 2 reviews.

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Reviews

Thermal wetsuit advance

"Great help from customer services. All instructions followed. Delivered promptly and to the amended address. Delighted with the service and communications I received. Husband hasnt tried out the wetsuit yet !"

— Anne L. (5/5)