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Data sheet updated in October 2026
The Prolimit Mercury Steamer Freezip 4/3 2027 fullsuit is your go-to mid-season wetsuit in the Mercury series. It features 4 mm thickness on the torso and 3 mm on the arms and legs, with a Freezip frontzip. This steamer takes over when the water warms up in spring and gives way to the 5/4 when autumn sets in. Thinner than its winter counterparts, it stays warm for its thickness thanks to the same Thermal Rebound2 layer. Prolimit rates it 7 out of 10 for warmth and 10 out of 10 for stretch.
KEY INFORMATION
PROLIMIT MERCURY STEAMER FREEZIP 4/3 2027 - Men's Mid-Season Fullsuit
What we like
- Lightweight movement: With 3 mm thickness on the arms and legs, you can paddle, stand up, and pull on the bar without resistance.
- Thermal Rebound2 in 4/3: This fullsuit features the same reflective membrane as the winter Mercury wetsuits, a rare find in a mid-season fullsuit.
- Frontzip: The YKK Freezip opens completely, making it convenient for quick changes in the parking lot.
- FTM seams: Triple glued and externally sealed, just like on the 5/4 and 6/4 wetsuits. This ensures watertightness.
- NaturePrene2: This neoprene-free material is made with FSC natural rubber and water-based glue.
- Maximum stretch rating: Prolimit rates this fullsuit 10 out of 10 for stretch.
Available sizes
Included / Not included
✔️ Included: The Prolimit Mercury Steamer Freezip 4/3 2027 fullsuit
❌ Not included: Hood, boots, gloves
DETAILED DESCRIPTION
A Mercury for the Mid-Season
The 4/3 fullsuit retains all the Mercury series features, including the rubber, linings, and seams, but with a mid-season thickness. It has 4 mm thickness on the torso for warmth and 3 mm on the limbs for mobility. Prolimit rates it 7 out of 10 for warmth and 10 out of 10 for stretch.
Warm for its Thickness
While a classic 4/3 often only has fleece, this one features Zodiac2 jacquard velvet. Behind it, the Thermal Rebound2 membrane reflects body heat and blocks wind. This extends your season by several weeks on both sides of summer.
Freezip and FTM Seams
The YKK frontzip opens fully. The back has no closure, eliminating any hard spots between the shoulder blades. FTM seams are triple-glued, sealed on the outside, and glued and blind-stitched on the inside. This makes them watertight and flexible.
What's in the Rubber
The NaturePrene2 Oystershell contains no neoprene. It is made of 80% natural rubber harvested from FSC-certified plantations, 20% recycled carbon black, oyster shell powder, and soybean oil. The panels are water-based glued. On the exterior, it features Quad Flex and Neolight Heather 550+.
SIZE GUIDE
| Size | Weight (kg) | Height (cm) | Chest (cm) | Waist size (cm) | Hips (cm) |
|---|---|---|---|---|---|
| 48/S | 61 to 70 | 171 to 176 | 96 to 100 | 75 to 81 | 85 to 91 |
| 50/M | 68 to 77 | 173 to 178 | 100 to 106 | 80 to 86 | 90 to 96 |
| 51/MT | 70 to 79 | 183 to 190 | 100 to 106 | 80 to 86 | 90 to 96 |
| 52/L | 77 to 86 | 177 to 181 | 106 to 111 | 85 to 91 | 95 to 101 |
| 53/LT | 79 to 88 | 188 to 196 | 106 to 111 | 85 to 91 | 95 to 101 |
| 54/XL | 86 to 95 | 178 to 186 | 111 to 116 | 90 to 96 | 100 to 106 |
| 56/XXL | 95 to 104 | 183 to 188 | 116 to 121 | 95 to 101 | 105 to 110 |
TECHNICAL SPECIFICATIONS
| Specifications | |
|---|---|
| Product | Prolimit Mercury Steamer Freezip 4/3 2027 |
| Type | Men's fullsuit |
| Series | Mercury |
| Thickness | 4 mm thickness on torso, 3 mm on arms and legs |
| Material | NaturePrene2 Oystershell, neoprene-free |
| Inner lining | Zodiac2 with Thermal Rebound2, Velvet Airflex |
| Outer Lining | Quad Flex and Neolight Heather 550+ |
| Closure | Freezip, full-opening YKK frontzip |
| Seams | FTM (Fluid Taping Method), triple glued |
| Warmth (Prolimit scale) | 7 out of 10 |
| Stretch (Prolimit scale) | 10 out of 10 |
| Sizes | 48/S, 50/M, 51/MT, 52/L, 53/LT, 54/XL, 56/XXL |
| Supplier reference | 400.74040 |
FAQ - PROLIMIT MERCURY STEAMER FREEZIP 4/3 2027
This wetsuit is for riders who sail in spring and autumn. They want a flexible wetsuit without shivering after an hour. For winter, the 5/4 or 6/4 from the series take over.
Switch when your arms or torso start to get cold at the end of a session. Prolimit rates the 4/3 at 7 out of 10 for warmth. The 5/4 is rated at 8, and the 6/4 at 9. A 4/3 and a 5/4 together cover the whole year.
Follow the Prolimit men's size guide above. The 3 mm in the limbs is a bit more forgiving than a winter wetsuit. The torso must remain snug to prevent water entry. MT and LT are for larger body sizes.
Rinse with fresh water. Dry in the shade on a wide hanger, inside out then right side out. Do not leave it in the sun in the car after your session; heat damages the neoprene and glued seams.
We have been in Pornichet since 2005. Wetsuits are in stock for trying on. The team rides all year on La Baule Bay and advises you in the shop, by phone, WhatsApp, or email.
▶ Need advice?
GlissEvolution, 2c avenue du Gulfstream, 44380 Pornichet (Loire-Atlantique)
09 62 64 74 77 | WhatsApp: 07 83 28 39 94, Tuesday to Saturday, 10am-1pm / 3pm-7pm
Test center available by appointment
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