2022 O'Neill Mens Pyscho One 4/3mm Chest Zip Wetsuit 5421 - Navy

ONeill Mens Pyscho One 4/3mm Chest Zip Wetsuit
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Colour: Navy
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- Product details

Year: 2022Model: 5421Colour: Navy

The unparalleled premium in lightweight flexibility and durability. The O'Neill Psycho One now features TB Firewall with heat retaining thermal interior layer in the chest, back and legs. Team inspired minimal seam design.


  • TechnoButter3 - The most advanced neoprene ever developed, boasting a 20% lighter formula with 30% less water absorption. Layers of innovation and quick dry properties offer rapid drying time. This lightweight gooey formula allows you to surf longer and feel lighter than ever before.
  • TechnoButter3 FIREWALL - Most insulative, lightest neoprene foam core ever, with heat retaining thermal interior layer and quick dry properties.
  • FLUID SEAM WELD - Watertight, durable, and ultra-flexible seam.
  • Eco Carbon Black in neoprene.
  • Limestone neoprene.
  • Dope-dyed yarn jersey.
  • Aqua Alpha solvent free neoprene lamination.


  • F.U.Z.E. CLOSURE - Front Upper Zip Entry (chest) uses a free-floating zipper panel and anti-flush barrier with drain holes to keep you dry and feeling loose.
  • MINIMAL SEAM DESIGN - Insane flexibility, fit and durability using a unique design which utilizes larger panels and less seams.
  • DOUBLE SUPER SEAL NECK - Fully adjustable glideskin seal. Comfortable and watertight.
  • 360 degree barrier with drainholes.


+ Delivery & returns

Standard Delivery FREE.
Delivered in approx. 3 business days.

Next Business Day Delivery £4.95 or FREE on orders over £99.
All orders placed before 15:00 normally dispatched same day.

Saturday UK Delivery £9.95
Orders placed after 15:00 on Fridays will be scheduled for delivery on Saturday the following week.

Europe Delivery
Find your destination country on a list of countries we ship to for details on pricing and approximate delivery times.

Click & Collect

Orders ready for collection can be picked up Mon-Fri between 11am - 5pm or on Saturday between 9am - 4pm from the following address. We'll send you an email as soon as your order is ready to be collected.

Please ring the bell at the front door and a member of staff will assist you. You will be required to provide a valid form of identification to collect your items.

Wetsuit Outlet
The Gunnery Drill Shed, Chapel Road, Shoeburyness, Essex SS3 9SL, United Kingdom.

Returns & Warranty

We offer a 60 day, easy return policy for unwanted items. We ask that all items are returned to us in a clean, unused and resalable condition, in the original outer and product packaging.

On the rare occasion you have experienced an issue with the items received, or you have not received your order within 3 weeks of receiving your dispatch confirmation please do†contact our dedicated customer service team†and we will be happy to assist you.

Every product sold on wetsuitoutlet.co.uk comes with a 12-month manufacturer warranty unless otherwise stated.

For more details or to generate a return, visit our returns page.

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