ONeill Epic 5/4 Back Zip Winter Wetsuit Blk/Graphite

• Thickness – 5/4 mm (5 mm core for warmth, 4 mm arms for flexibility)
• Entry System – Back Zip with re-engineered blackout zip
• Neoprene – 100% UltraFlex Neoprene
• Lining – FluidFlex Firewall for added warmth
• Seams – Glued & Blindstitched (GBS) Seams
• Panels – Seamless Paddle Zones for comfort and stretch
• Neck – Double Super Seal Neck Closure
• Knees – Krypto Knee Padz for durability
• LSD – Lumbar Seamless Design for flexibility in the lower back
• Key Pocket – External key pocket with loop
• Warranty – 1 year workmanship and materials

Suit Description

The O’Neill Epic 5/4 Back Zip Winter Wetsuit combines value, durability and cold-water performance. Using many of the same features found in O’Neill’s high-end models, the Epic delivers solid warmth at a more affordable price. With 5 mm neoprene in the core and 4 mm in the arms and shoulders, it offers strong insulation without sacrificing too much paddle mobility.

Constructed with UltraFlex neoprene throughout, the suit feels comfortable and stretches well for a back zip design. The addition of FluidFlex Firewall lining in key areas adds heat retention and quick-dry performance, while GBS seams minimise water entry and maintain flexibility. A double super seal neck closure and clever zip flushing through the zip panel, while Krypto Knee Padz provide reinforcement where it’s needed most. O’Neill’s Lumbar Seamless Design and seamless paddle zones further enhance comfort by reducing seam irritation and improving flexibility.

The Epic 5/4 Back Zip is best suited for water temperatures around 7–12C, making it a versatile option for UK and Northern European winter surfing. The re-engineered blackout back zip makes entry and exit straightforward while maintaining a good seal against water.

Expert Advice

If you’re looking for a winter wetsuit that’s warm, durable and easy to get into, the Epic 5/4 Back Zip is a great choice. The back zip design is simple and convenient, particularly for surfers who find chest zip or zip-free entries too tight or fiddly. While it doesn’t offer the same ultimate performance or flexibility as O’Neill’s top-tier suits, the Epic still provides excellent value and dependable warmth.

Perfect for surfers who want a reliable winter suit without paying for premium features, the Epic 5/4 Back Zip delivers on comfort, ease of use and protection from the cold — making it one of the most popular entry-level winter wetsuits on the market.