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Sheet updated September 2026
The ION Seek Amp 5/4 Back Zip 2027 is the Amp series' back zip winter fullsuit. It's the most elastic in the Seek line, and it features the new Graphene_Plush 2.0 on the back panel. You get five millimeters on the torso, four on the limbs, and ION's most flexible linings: Hot_Stuff 2.0 throughout the body, Graphene_Plush 2.0 in the back, and recycled Max_Flex on the chest, shoulders, and neck. ION designed this fullsuit for riders who want unrestricted freedom of movement in cold water. It comes in one color, Black, and fourteen sizes, including short and tall cuts.
KEY INFORMATION
ION SEEK AMP 5/4 BACK ZIP MEN 2027 - 5/4 mm Winter Fullsuit
What we like
- Graphene_Plush 2.0 on the back panel: This season's innovation for the Amp series is a lightweight, heat-conducting, and recycled lining. It works in conjunction with Hot_Stuff 2.0, which covers the rest of the body.
- Hot_Stuff 2.0 throughout the body: This is ION's most flexible, quick-drying thermal lining, made from recycled materials.
- Recycled Max_Flex: On the chest, shoulders, and neck, the Max_Flex outer lining provides 30% more flexibility, according to ION. This is precisely where you need movement for paddling and pumping.
- I_Foam Neoprene: ION chose this low-density foam, infused with oyster shell powder, for its insulation.
- Glued and taped seams: These are blind-stitched, with flexible tape on the entire interior. You'll find reinforced stress points and fused edges at the arms and legs.
- Water_Gate back zip: An internal neoprene panel behind the zip minimizes water entry and creates a chafe-free zone on your back.
- Quick-entry back zip: The back zip design requires less flexibility than a front zip, keeps your chest free, and closes easily with the cord.
Available sizes
Included / Not included
✓ Included: 1 ION Seek Amp 5/4 Back Zip 2027 wetsuit
✗ Not included: Hood, Boots, Gloves
DETAILED DESCRIPTION
What's new with the Seek Amp 2027
ION offers three Seek wetsuit series: Select for maximum warmth, Amp for elasticity, and Core as an all-rounder. The ION Seek Amp 5/4 Back Zip is the 5/4 back zip version of the Amp series. ION is moving directly from the 2025 to the 2027 collection. The big news is the lining: lightweight, heat-conducting, and recycled Graphene_Plush 2.0 now covers the back panel. It complements the Hot_Stuff 2.0 that lines the rest of the body. ION states that both materials are made from recycled content.
Elasticity: Max_Flex, Eco_Stretch, I_Foam
The recycled Max_Flex outer lining covers the chest and shoulders. It also extends to the neck. ION states it delivers 30% more flexibility and quick-drying properties. The rest of the wetsuit features Eco_Stretch, a fabric made from recycled nylon waste. Beneath these linings, the low-density I_Foam neoprene contains oyster shell powder, a filler ION uses for insulation. The shoulders are without a seam, and the reduced number of panels is immediately noticeable with your first arm movement.
Back zip, Water_Gate, and seams
The back zip offers the easiest entry and exit, leaving your chest free of seams or pressure. To minimize water entry, ION places an internal neoprene panel, the Water_Gate, behind the zip. This also creates a chafe-free zone on your back. The seams are glued and blind-stitched, then taped with a flexible band on the entire inner surface, with reinforced stress points. Arm and leg cuffs are fused. You'll find thin padding on the shins, reinforced drainage holes, and separate leg straps.
For what conditions
ION designed the Seek Amp 5/4 Back Zip for riders who want maximum freedom of movement in cold conditions. On the Atlantic coast, this is your go-to winter fullsuit from December to March. Add a hood and boots when the northeast wind really kicks in. Gloves are also needed. For icy waters, the Seek Amp 6/5 Back Zip adds an extra millimeter with the same construction. It comes in a single color, Black, but offers fourteen sizes: the six standard sizes from 46/XS to 56/XXL, four short cuts from 25/MS to 28/XXLS, and four tall cuts from 94/ST to 106/XLT. This is the widest size range in the 2027 Amp line.
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 |
| 94/ST | 179 to 184 | 65 to 74 | 92 to 98 |
| 25/MS | 167 to 174 | 66 to 75 | 98 to 104 |
| 50/M | 175 to 181 | 70 to 78 | 98 to 103 |
| 98/MT | 182 to 189 | 73 to 82 | 97 to 103 |
| 26/LS | 170 to 177 | 74 to 83 | 103 to 109 |
| 52/L | 178 to 184 | 78 to 86 | 103 to 108 |
| 102/LT | 185 to 192 | 81 to 90 | 102 to 108 |
| 27/XLS | 173 to 180 | 82 to 91 | 108 to 114 |
| 54/XL | 181 to 187 | 86 to 94 | 108 to 113 |
| 106/XLT | 188 to 195 | 89 to 98 | 107 to 113 |
| 28/XXLS | 176 to 183 | 90 to 98 | 113 to 119 |
| 56/XXL | 184 to 190 | 94 to 102 | 113 to 118 |
TECHNICAL SPECIFICATIONS
| Specifications | |
|---|---|
| Type | Men's fullsuit, long sleeves and legs |
| Thickness | 5/4 mm |
| Admission | Back zip with Water_Gate panel |
| Neoprene | Low-density I_Foam, oyster shell powder |
| Thermal lining | Hot_Stuff 2.0 throughout the body, Graphene_Plush 2.0 on the back panel, recycled materials |
| Outer lining | Recycled Max_Flex on chest, shoulders, and neck; recycled nylon Eco_Stretch elsewhere |
| Seams | These seams are **glued seams** and blind-stitched, with internal flexible tape and reinforced stress points, and fused edges. |
| Cut | We've eliminated shoulder seams and reduced the number of panels. |
| Details | Thin padding on shins, reinforced drainage holes, separate leg straps |
| Composition | This fullsuit is made from 80% **neoprene** and 20% recycled polyamide, according to ION. |
| Color | Black |
| Sizes | Available in sizes 46/XS to 56/XXL, with short cuts from 25/MS to 28/XXLS, and long cuts from 94/ST to 106/XLT. |
| Series | This is the Seek Amp, from the Winter 2027 collection. |
| ION product code | 48272-4406 |
FAQ - ION SEEK AMP 5/4 BACK ZIP MEN 2027
This wetsuit is for riders on the Atlantic coast from December to March. It is a flexible winter wetsuit, not armor. For truly icy water or long, static sessions, the Seek Amp 6/5 Back Zip has the advantage of an extra millimeter.
The back zip is easier to put on and take off. It leaves the chest free and does not require shoulder flexibility. The front zip lets in less water and frees the back for paddling. ION offers the Seek Amp 5/4 in both versions. The Back Zip is recommended for those who change quickly in the parking lot and dislike pulling their head through a narrow opening.
The ION size guide higher on the page provides height and weight for each size, along with chest circumference. Short cuts 25/MS to 28/XXLS have a wide bust on shorter legs. Long cuts 94/ST to 106/XLT have a slim bust on longer legs. The ION model in the photos is 1.76 m tall and wears size 50/M. A wetsuit should fit snugly when dry, without air creases. If you are between two sizes, call us.
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. Never fold it wet in a bag. Close the zip before hanging it to avoid deforming the back.
We are a Kite, Wing, and Surf shop in Pornichet, on the Atlantic coast. We ride all year in water that drops below ten degrees in February. We wear ION wetsuits before we sell them. If you have a doubt about the size or hesitate between two thickness options, 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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