Coche un accessoire : il part au panier avec ce produit.
Sheet updated September 2026
The O'Neill Epic 5/4 Chest Zip is O'Neill's entry-level winter fullsuit. It features 5mm neoprene on the torso and 4mm on the limbs.U.Z.E. chest zip.The Epic series is how many riders get into O'Neill. It features UltraFlex neoprene, now fully double-lined throughout the suit, and glued and blind-stitched seams. It also has a Super Seal double collar and Krypto knee pads. O'Neill rates it for water temperatures from 4 to 11 degrees Celsius. Four colors, fifteen sizes including short (S) and tall (T) cuts.
KEY INFORMATION
O'NEILL EPIC 5/4 CHEST ZIP MEN - 5/4 mm Winter Fullsuit
What we like
- F.U.Z.E. Chest Zip: Chest entry lets in less water than a back zip and keeps the back flexible. On an Epic, this is what differentiates it from the Back Zip version.
- Fully Lined: O'Neill has upgraded the Epic Chest Zip to a double lining throughout the entire suit: it's stronger, easier to put on, and warmer.
- Glued and Blind-Stitched Seams: The classic construction for winter wetsuits: the thread does not penetrate the neoprene, so water does not pass through the seam.
- Super Seal Double Collar: Two thickness layers at the collar limit water entry at the neck, the weak point of most wetsuits.
- Krypto Knee Pads: Protective pads on the knees, where a wetsuit wears out first on a board and on the sand.
- Key Pocket: An external pocket with a loop for your car key. This detail is missing on many wetsuits at this price point.
- Rated 4 to 11 Degrees Celsius: O'Neill provides this water temperature range, making it ideal for the entire Atlantic winter season.
Available sizes
Color
Black, Abyss / Graphite, Black / Slate / Smoke, Tempered Steel / Smoke / Graphite
Included / Not included
✔️ Included: 1 O'Neill Epic 5/4 Chest Zip fullsuit
✗ Not included: Hood, Boots, Gloves
DETAILED DESCRIPTION
What an Epic is worth
O'Neill organizes its wetsuits into distinct series: the Epic for entry-level, the Hyperfreak for lightweight performance, and the Psycho Tech for ultimate warmth. While the Epic doesn't boast the TechnoButter found in the higher-end series, it still features UltraFlex, a reliable neoprene. O'Neill has generously equipped the Epic with several premium elements from its top-tier wetsuits: the F.U.Z.E. chest zip, the Super Seal double collar, seamless shoulder zones for unrestricted paddling, and a seamless lumbar design. This is a full-featured winter wetsuit, not a stripped-down version.
The F.U.Z.E. chest zip
F.U.Z.E. stands for Front Upper Zip Entry, O'Neill's proprietary chest zip system. Compared to the back zip on the Epic Back Zip, the chest opening significantly reduces the area where water can enter. It also leaves the back entirely in neoprene. This ensures maximum flexibility. Putting it on might take a moment to master the first time, but once you get the hang of it, it's actually faster than a back zip.
Construction and details
This fullsuit features fully lined UltraFlex neoprene, along with glued and blind-stitched seams. The wrist cuff anchoring prevents the cuff from turning inside out, and seamless paddle zones at the shoulders enhance comfort. Krypto knee pads and an external key pocket complete the package. While none of these features are spectacular in isolation, together they form a list of characteristics that ensure a wetsuit lasts for several winters.
Colorways and sizes
Choose from four colors: solid black, Abyss / Graphite, Black / Slate / Smoke, and Tempered Steel / Smoke / Graphite. Fifteen sizes are available, ranging from XS to 4XL, with S (short) and T (tall) cuts offered for sizes S, M, L, and XL. For example, a rider who is 1.85 m and 75 kg would typically wear an MT, not an L. The O'Neill size guide, located higher on this page, provides detailed height and weight measurements for each cut. It also provides chest and waist measurements.
SIZE GUIDE
| Size | Rider size (cm) | Weight (kg) | Chest (cm) | Waist size (cm) |
|---|---|---|---|---|
| XS | 170 to 175 | 57 to 64 | 93 to 95 | 72 to 75 |
| S | 173 to 178 | 61 to 70 | 95 to 99 | 75 to 79 |
| ST | 183 to 188 | 66 to 75 | 95 to 99 | 75 to 79 |
| MS | 169 to 174 | 66 to 75 | 99 to 104 | 79 to 84 |
| M | 175 to 180 | 70 to 77 | 99 to 104 | 79 to 84 |
| MT | 185 to 191 | 73 to 82 | 99 to 104 | 79 to 84 |
| LS | 171 to 177 | 73 to 82 | 104 to 110 | 84 to 89 |
| L | 178 to 183 | 77 to 86 | 104 to 110 | 84 to 89 |
| LT | 188 to 193 | 82 to 91 | 104 to 110 | 84 to 89 |
| XLS | 174 to 179 | 82 to 91 | 110 to 117 | 89 to 94 |
| XL | 180 to 185 | 86 to 95 | 110 to 117 | 89 to 94 |
| XLT | 191 to 196 | 91 to 100 | 110 to 117 | 89 to 94 |
| 2XL | 183 to 188 | 95 to 104 | 117 to 123 | 94 to 99 |
| 3XL | 183 to 191 | 104 to 113 | 123 to 130 | 99 to 112 |
| 4XL | 185 to 193 | 113 to 122 | 130 to 136 | 112 to 122 |
TECHNICAL SPECIFICATIONS
| Specifications | |
|---|---|
| Type | Men's fullsuit, long sleeves and legs |
| Thickness | 5 mm on the torso, 4 mm on the limbs |
| Admission | F.U.Z.E. chest zip |
| Neoprene | UltraFlex, fully lined |
| Seams | Glued and blind-stitched |
| Collar | Super Seal double collar |
| Knees | Krypto Knee Padz |
| External key pocket with loop | |
| Advertised water temperature | 4 to 11 degrees |
| Series | Epic |
| Sizes | XS to 4XL, S and T cuts on S, M, L and XL |
| O'Neill reference | 5648 |
FAQ - O'NEILL EPIC 5/4 CHEST ZIP MEN
This wetsuit is for riders who surf from November to March on the Atlantic coast. It is an ideal winter chest zip wetsuit without the higher price of an Hyperfreak or a Psycho Tech. For very long sessions in 5-degree water, the higher-end series offer warmer, more flexible neoprene.
O'Neill rates it for 4 to 11 degrees Celsius. On the Atlantic coast, this covers the entire cold season. Below 8 degrees, you will also need a hood, as well as boots and gloves. These are not included.
The O'Neill size guide higher on the page provides height and weight measurements for each cut, along with chest and waist measurements. S and T cuts have the same torso as the base size, with shorter or longer limbs. A wetsuit must be tight when dry; otherwise, it will let water in. If you are unsure between two sizes, call us.
Rinse it with fresh water after each session, inside out, and dry it in the shade on a wide hanger. Never in the sun, never on a radiator, never folded wet in a bag. Washing it occasionally with O'Neill Wetsuit Cleaner removes salt and odors.
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 winter wetsuits before selling them. If you have a question about sizing or cut, 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
To go further
Customer reviews
Loading reviews...
