Data sheet updated in June 2026
Engineered for total freedom of movement, the ION Seek Amp 5/4 Front Zip 2025 is a perfectly stretchy and warm men's fullsuit. Featuring an ultra-stretchy recycled Max_Flex outer lining and a one-hand front zip, this wetsuit is built for winter sessions in cold waters (7°C - 12°C).
KEY INFORMATION
ION Seek Amp 5/4 Front Zip Men's 5/4mm front zip wetsuit
What we like
- Recycled Max_Flex: This 100% recycled outer lining on the chest, shoulders, and neck offers 30% increased flexibility, quick-drying properties, and maximum comfort.
- One-hand front zip: A new zipper design that opens and closes with a single hand, complete with an adjustable Cordlock soft cord.
- Hot_Stuff 2.0 and Plasma_Plush 2.0: Experience a highly flexible thermal lining on the front, paired with a plush, quick-drying fabric on the back for superior protection against cold wind.
- Silk_Stuff: A thin, silky textile on the shoulders and arms ensures maximum stretch where freedom of movement is paramount.
- I_Foam: This low-density foam provides optimal thermal insulation properties and now includes oyster shell powder.
- Invisible glued seams: Flexible tapes on the inside, reinforced stress points, and fused edges on the arms and legs enhance durability and comfort.
- The Sweep_Cut features seamless shoulders and a minimized panel design for unprecedented freedom of movement.
- Responsible manufacturing: Crafted with solvent-free Aqua Alpha glue, limestone neoprene, Eco-Carbon Black, and dope dyeing.
Available sizes
Black (900)
46/XS 48/S 50/M 52/L 54/XL 56/XXL 27/XLS 28/XXLS 94/ST 98/MTBlue (732)
48/S 50/M 52/L 54/XL 27/XLS 28/XXLS 94/STColor
Use
Ideal Season
Included / Not included
- ✓ Included: ION Seek Amp 5/4 Front Zip Men's Wetsuit
- ✓ Included: Separate leg straps
- ✗ Not included: wetsuit accessories (gloves, boots, hood)
DETAILED DESCRIPTION
Warmth and thermal linings
The Seek Amp combines quick-drying properties with exceptional stretch. Its highly flexible Hot_Stuff 2.0 thermal lining covers the front of the wetsuit, while the back features Plasma_Plush 2.0, a soft, quick-drying fabric that provides enhanced protection against cold wind. For maximum freedom of movement where it matters most, the shoulders and arms are equipped with the thin, silky Silk_Stuff textile. With a 5/4mm thickness, this wetsuit is ideal for winter sessions in cold waters, targeting a temperature range of 7°C to 12°C.
Max_Flex recycled stretch and I_Foam neoprene
The ultra-flexible recycled Max_Flex outer lining covers the chest, shoulders, and neck: it offers 30% increased flexibility, quick-drying properties, and maximum comfort. Its diamond structure enhances suppleness, while the material does not absorb water but wicks it outwards through small channels, reducing drying time. On the rest of the body, Eco_Stretch material, made from recycled nylon, ensures durability without compromising performance (only on the black colorway). The low-density I_Foam neoprene retains more air for optimal thermal insulation and flexibility, and now incorporates oyster shell powder as a replacement for limestone rock.
Watertightness: front zip and seams
The new zip opens to the left and closes to the right with one hand, and a soft Cordlock drawstring closure allows for one-handed adjustment of the front flap. Glued blind seams enhance strength, while flexible taped seams on the inside and reinforced stress points (Maki_Tape 2.0) ensure flexibility and resistance. Fused edges on the arms and legs increase resistance and comfort. Watertight silicone prints on the front closure, arms, and legs, Seal_Tite at the seals and collar, and Water_Barrier under the zip flap limit water infiltration.
Fit, Finishes, and Durability
The seamless Sweep_Cut shoulders and minimized panel design give you unprecedented freedom of movement for paddling and rotating. This wetsuit is packed with practical features: reinforced Drain_Holes on the chest and legs, a key pocket with a loop, a replaceable drawstring, and separate leg straps. We prioritize responsible materials in its construction. It uses entirely water-based, solvent-free Aqua Alpha glue, limestone neoprene, Eco-Carbon Black carbon black from used tires, water-saving dope dyeing, and oyster shell powder. The composition is 80% neoprene, 10% polyamide, and 10% recycled polyamide.
ION SIZE GUIDE
Source: ION Water Size Charts. ION men's sizes are based on your height and weight. Chest circumference is also a factor.
| Size | EURO | Height (cm) | Weight (kg) | Chest (cm) |
|---|---|---|---|---|
| 46/XS | 46 | 169-175 | 54-62 | 88-93 |
| 48/S | 48 | 172-178 | 62-70 | 93-98 |
| 50/M | 50 | 175-181 | 70-78 | 98-103 |
| 52/L | 52 | 178-184 | 78-86 | 103-108 |
| 54/XL | 54 | 181-187 | 86-94 | 108-113 |
| 56/XXL | 56 | 184-190 | 94-102 | 113-118 |
| 27/XLS | 27 | 173-180 | 82-91 | 108-114 |
| 28/XXLS | 28 | 176-183 | 90-98 | 113-119 |
| 94/ST | 94 | 179-184 | 65-74 | 92-98 |
| 98/MT | 98 | 182-189 | 73-82 | 97-103 |
If you're between two sizes, always opt for the larger one. Your wetsuit should fit snugly without restricting your breathing. Short (S) and Tall (T) cuts are available to adjust torso and leg length. Consult the official ION guide
TECHNICAL SPECIFICATIONS
| Specifications | |
|---|---|
| Product | ION Seek Amp 5/4 Front Zip Men's Wetsuit 2025 |
| Product Code | 48252-4466 |
| Thickness | 5/4mm |
| Closure | Front Zip (front zip, for easy one-hand opening and closing) |
| Material | 80% Neoprene / 10% Polyamide / 10% Recycled Polyamide |
| Neoprene Type | I_Foam low density, oyster shell powder |
| Outer Lining | Max_Flex recycled (chest, shoulders, neck); Eco_Stretch recycled nylon (black only) |
| Thermal Front Lining | Hot_Stuff 2.0 |
| Back lining | Plasma_Plush 2.0 |
| Shoulders and Arms | Silk_Stuff |
| Seams | Glued blind seams, internal flexible tapes, reinforced stress points (Maki_Tape 2.0), fused edges |
| Technologies | Sweep_Cut, Cordlock, Seal_Tite, Water_Barrier, Drain_Holes, Seam_Reinforcement |
| Extras | Key pocket, replaceable draw cord, separate leg straps |
| Temperature | 7°C - 12°C (45°F - 54°F) |
| Available sizes | 46/XS, 48/S, 50/M, 52/L, 54/XL, 56/XXL, 27/XLS, 28/XXLS, 94/ST, 98/MT |
| Color | 900 black, 732 blue-nights |
| Use | Wing Foil, Kitesurf, Windsurf, Surf |
| Season | Winter |
FAQ
What size should I choose for the ION Seek Amp 5/4?
To find your perfect fit, refer to the ION size guide above, which is based on height and weight. Chest circumference is also a factor. The black color offers the widest range of sizes (from 46/XS to 56/XXL), including Short (27/XLS, 28/XXLS) and Tall (94/ST, 98/MT) cuts. Remember, a wetsuit that is too loose will allow more water in, reducing its thermal efficiency.
Is the Seek Amp 5/4 suitable for wing foil and kitesurf?
Yes. Its recycled Max_Flex lining and seamless Sweep_Cut shoulders offer great freedom of movement, making it ideal for wing foil, kitesurf, windsurf, and Surf. The 5/4mm thickness and thermal linings are perfect for winter sessions in cold waters (7°C - 12°C).
What's the difference between the black and blue colors?
Both colors share the same advanced technologies. The black color also incorporates Eco_Stretch material made from recycled nylon throughout the body and offers the most comprehensive range of sizes (including 46/XS, 56/XXL, and 98/MT). The 732 blue-nights color is available from 48/S to 54/XL, with 27/XLS, 28/XXLS, and 94/ST cuts.
Why buy from GlissEvolution?
GlissEvolution brings over 20 years of expertise in watersports. Our passionate advisors test equipment at the spots of La Baule and Pornichet. We offer responsive after-sales support based in France, free shipping on orders over €150, and the option to pick up your order in-store in Pornichet.
► Need some 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
To go further
Customer reviews
Loading reviews...
