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Data sheet updated in November 2026
The ION Seek Core 4/3 Overknee LS Front Zip men's 2023 is a 4/3 long-sleeve, overknee wetsuit with a front zip, part of ION's 2023 Seek Core range. You get Hot_Stuff 2.0 on the torso and thighs, Plasma_Plush on the back, and Silk_Stuff on the shoulders. Reinforced glued seams ensure warmth and robustness. Available in sizes 46/XS to 56/XXL.
KEY INFORMATION
ION SEEK CORE 4/3 OVERKNEE LS FRONT ZIP MEN'S 2023 - 4/3 mm Wetsuit
What we like
- Hot_Stuff 2.0 on the torso and thighs: This highly elastic thermal lining from ION keeps you warm where your body loses the most heat, all without restricting your movement.
- Plasma_Plush on the back: A soft, quick-drying fleece adds warmth and protects you from cold winds.
- Silk_Stuff on the shoulders and arms: This thin, silky lining on the chest, shoulders, and arms provides stretch and prevents the wetsuit from pulling.
- Glued and reinforced seams: You get invisible glued seams, flexible tape at the knees and crotch, and reinforced stress points.
- Seamless shoulders: Fewer panels and no seam on the shoulders mean your freedom of movement comes from the cut itself.
- One-hand front zip: The front closure flap adjusts easily with one hand, thanks to a flexible, replaceable cord.
Available sizes
Included / Not included
✔️ Included: 1 ION Seek Core 4/3 Overknee LS Front Zip men's 2023
✗ Not included: Boots, Gloves, Hood
DETAILED DESCRIPTION
The Seek Core, according to ION
ION sums up the Seek Core with a simple formula: superior performance at an affordable price, and a versatile simplicity. The ION Seek Core 4/3 Overknee LS Front Zip men's 2023 is the 4/3 long-sleeve, overknee, front zip version from the 2023 vintage. This model is now on end-of-line sale at ION. You can find the current version available online alongside it.
Warmth and linings
The torso and thighs feature highly elastic Hot_Stuff 2.0 lining, which retains warmth where your body needs it most. On the back, Plasma_Plush fleece dries quickly and protects you from cold winds. The chest, shoulders, and arms get Silk_Stuff, a thin and silky lining for excellent stretch and comfort.
Seams, cut, and details
The wetsuit features invisible glued seams, flexible tape at the knees and crotch, and reinforced stress points. Seamless shoulders and a design that minimizes panels enhance your mobility. Water Defender Leg prevents the legs from riding up when water enters. You'll also find reinforced drainage holes at the chest and legs, a key pocket with a loop, a replaceable cord, and separate leg straps.
For what conditions
A 4/3 wetsuit is perfect for spring and autumn sessions on the Atlantic coast; for winter, you'll want a 5/4. The overknee leg design keeps your knees free when the water starts to warm up. Available in sizes 46/XS to 56/XXL.
SIZE GUIDE
| Size | Height (cm) | Weight (kg) | Chest (cm) |
|---|---|---|---|
| 46/XS | 169 to 175 | 54 to 62 | 88 to 93 |
| 48/S | 172 to 178 | 62 to 70 | 93 to 98 |
| 50/M | 175 to 181 | 70 to 78 | 98 to 103 |
| 52/L | 178 to 184 | 78 to 86 | 103 to 108 |
| 54/XL | 181 to 187 | 86 to 94 | 108 to 113 |
| 56/XXL | 184 to 190 | 94 to 102 | 113 to 118 |
TECHNICAL SPECIFICATIONS
| Specifications | |
|---|---|
| Type | Men's wetsuit with long sleeves and overknee legs |
| Thickness | 4/3 mm |
| Admission | Front zip, one-hand adjustable flap with cord |
| Thermal lining | Hot_Stuff 2.0 on torso and thighs, Plasma_Plush on back |
| Inner lining | Silk_Stuff on chest, shoulders, and arms |
| Seams | Glued blind-stitched, flexible tape at knees and crotch, reinforced stress points |
| Cut | We've eliminated shoulder seams and reduced the number of panels. |
| Details | Water Defender Leg prevents legs from riding up when water enters. You'll find reinforced drainage holes at the chest and legs, a key pocket with a loop, a replaceable cord, and separate leg straps. |
| Sizes | 46/XS to 56/XXL. |
| Range | ION Seek Core, 2023 vintage |
| Supplier reference | 48232-4477 |
FAQ - ION SEEK CORE 4/3 OVERKNEE LS FRONT ZIP MEN'S 2023
This wetsuit is for the kiter, wingfoiler, or surfer who wants a simple, warm, and robust ION wetsuit, and prefers a front zip. A 4/3 thickness is perfect for spring and autumn on the Atlantic coast; for winter, you'll need a 5/4. The overknee leg length keeps your knees free when the water warms up.
The ION size guide is higher on the page. It provides height and weight for each size. Chest circumference is also included. A wetsuit should fit snugly when dry, with no air pockets. If you are between sizes, call us.
The range and philosophy are the same: warmth and elasticity. They also offer robustness at the best price. The 2023 model is a previous vintage, an end-of-series item from ION. The current model is available online for those who want the latest collection.
Rinse it with fresh water after each session, inside out. Let it dry in the shade on a wide hanger. Never dry it in the sun or on a radiator, and never fold it wet in a bag. Close the zip before hanging it, and rinse the pull tab. Sand in a zip is what wears it out.
We are a kite, wing, and Surf shop in Pornichet, on the Atlantic coast. We ride all year round. We wear ION wetsuits before selling them. If you have any doubts about the size or thickness, call us or visit the shop.
▶ 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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