Data sheet updated in November 2026
The 2025 ION Amaze Amp 5/4 Back Zip women's fullsuit is the winter back zip model from the Amp series, ION's most elastic women's wetsuit. It features five millimeters of thickness on the torso and four on the limbs, along with a back zip you can close yourself. You get flexible linings throughout: Hot_Stuff 2.0 in the front, Plasma_Plush 2.0 and Novaskin in the back, Silk_Stuff at the shoulders, and recycled Max_Flex on the chest, shoulders, and neck. This fullsuit comes in five sizes, from 34/XS to 42/XL.
KEY INFORMATION
ION AMAZE AMP 5/4 BACK ZIP WOMEN'S 2025 - 5/4 mm Winter Fullsuit
What we like
- Hot_Stuff 2.0 in the front, Plasma_Plush 2.0 in the back: A very flexible, quick-drying thermal lining covers the front, while a soft, fast-drying fabric in the back protects against cold wind.
- Silk_Stuff on the shoulders and arms: This thin, silky textile is strategically placed where you move most, ensuring unrestricted paddling, pumping, and holding the bar without your wetsuit pulling.
- Recycled Max_Flex: Covering the chest, shoulders, and neck, the Max_Flex outer lining delivers 30% more flexibility, according to ION.
- 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.
- Back zip and Novaskin in the back: The back zip makes for quick, unassisted entry and exit, while the Novaskin fabric in the back effectively blocks cold wind.
Available sizes
Included / Not included
✔️ Included: 1 ION Amaze Amp 5/4 Back Zip women's 2025 wetsuit
✗ Not included: Hood, Boots, Gloves
DETAILED DESCRIPTION
The 2025 edition of the Amp series
The ION Amaze Amp 5/4 Back Zip women's 2025 is the 5/4 back zip version from the Amaze Amp series in the 2025 winter collection, ION's most elastic series. While the 2027 model is also available, the 2025 stands out with its specific linings: Hot_Stuff 2.0 on the front, Plasma_Plush 2.0 in the back with a windproof Novaskin textile, and Silk_Stuff at the shoulders and arms. This model is currently at the end of its series at ION.
Elasticity: Max_Flex, Silk_Stuff, I_Foam
The recycled Max_Flex outer lining covers the chest and shoulders. It also extends to the neck. ION states it provides 30% more flexibility and quick-drying properties. Inside, the Silk_Stuff on the shoulders and arms allows for free movement. 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 number of panels is reduced.
Back zip, watertightness, and seams
Entry is via the back zip, a design that allows for quick, unassisted donning and doffing, keeping the chest panel intact. Silicone prints on the arms and legs minimize water entry. The seams are glued and blind-stitched, reinforced with a flexible tape across the entire interior, and feature strengthened stress points. The arm and leg edges are fused. You'll find thin padding on the shins, along with reinforced drainage holes and separate straps on the legs.
For what conditions
ION designed this fullsuit for riders seeking total freedom of movement in cold water. For the Atlantic coast, it's the go-to winter wetsuit from December to March. Pair it with a hood and boots, and add gloves when the northeast wind picks up. For icy conditions, the Amaze Amp 6/5 Hood Front Zip offers an extra millimeter of thickness and an integrated hood. It's available in five sizes, from 34/XS to 42/XL.
SIZE GUIDE
| Size | Height (cm) | Weight (kg) | Chest (cm) |
|---|---|---|---|
| 34/XS | 157 to 165 | 46 to 54 | 80 to 85 |
| 36/S | 161 to 170 | 53 to 61 | 84 to 89 |
| 38/M | 166 to 175 | 60 to 69 | 88 to 93 |
| 40/L | 170 to 180 | 64 to 75 | 92 to 97 |
| 42/XL | 174 to 190 | 75 to 90 | 96 to 101 |
TECHNICAL SPECIFICATIONS
| Specifications | |
|---|---|
| Type | Women's fullsuit, long sleeves and legs |
| Thickness | 5/4 mm |
| Admission | Back zip |
| Neoprene | Low-density I_Foam, oyster shell powder |
| Thermal lining | Hot_Stuff 2.0 on the front, Plasma_Plush 2.0 on the back, Silk_Stuff on shoulders and arms, Novaskin on the back |
| Outer lining | Recycled Max_Flex on the chest, shoulders, and neck |
| 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. |
| Watertightness | Silicone prints on arms and legs |
| Details | Thin padding at shins, reinforced drainage holes at legs, separate leg straps |
| Sizes | 34/XS, 36/S, 38/M, 40/L, 42/XL |
| Series | Amaze Amp, Winter 2025 collection |
| Supplier reference | 48253-4506 |
FAQ - ION AMAZE AMP 5/4 BACK ZIP WOMEN'S 2025
It's for the rider who hits the water from December to March on the Atlantic coast, wants a flexible winter wetsuit, and prefers a back zip that's easy to close alone and leaves the chest seam-free.
They are the same series, with the same cut and recycled Max_Flex. The 2027 has different inner lining, with Graphene_Plush 2.0 and Hot_Stuff 2.0 throughout the body, and recycled Eco_Stretch. It also adds the Water_Gate panel behind the back zip. The 2025 keeps Hot_Stuff 2.0 in the front, Plasma_Plush 2.0, and Novaskin in the back. This is a proven winter wetsuit, now an end-of-series item at ION.
The ION size guide higher on the page provides height and weight for each size. It also gives the chest circumference. Size 42/XL covers heights up to 1.90 m according to this guide. A wetsuit should fit snugly when dry, with no air wrinkles. If you are between sizes, call us.
Rinse it with fresh water after every session. Turn it inside out and dry it 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 back zip before hanging it, and rinse the zipper pull with the rest. 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 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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