O'Neill Mens Psycho Tech 5/4+mm Chest Zip Wetsuit TB4
O'Neill Mens Psycho Tech 5/4+mm Chest Zip Wetsuit TB4

O'Neill Mens Psycho Tech 5/4+mm Chest Zip Wetsuit TB4


Regular price€519.00
VAT included. Shipping calculated at checkout.

A firm favourite for the Surfdock Team, we have been wearing the Psycho Tech 5/4 Chest Zip wetsuit for many years. Its latest iteration features Technobutter 4 neoprene made from recycled materials and offering the best heat retention, flexibility and comfort available on the market.
  • Low stock - 1 item left
  • Inventory on the way
The O'Neill Psycho Tech 5/4+ Chest Zip wetsuit has been a firm favourite for us and for all of you for many years now. The new 2023 model has been updated with Technobutter 4 neoprene to offer even more incredible performance. Featuring recycled materials the new Technobutter 4 range is the next step in O'Neills sustainability journey. We have put Technobutter 4 to the test already and love how warm and stretchy it feels. The reduced drying time comes in very handy when surfing on consecutive days.

Key Features

  • plus 0.5mm for additional warmth
  • anti-flush barrier
  • drainholes prevent water from entering the suit
  • minimal seam design
  • recycled materials - TB4, TB4X, TB4 Air Firewall, TB4 Firewall
  • superseal handcuffs
  • Plasma wrist and ankle seals
  • Krypto knee padz
  • double super-seal collar
  • key pocket with loop


  • stitchless glued seams (triple glued)
  • exterior fluid seam weld
  • interior recycled TB3X tape
  • TB4 (recycled material) - arms and shoulders
  • TB4X (recycled material) - entry
  • TB4 Duraskin (SL) Air Firewall (recycled materials) - chest and back
  • TB4 Firewall (recycled materials) - thigh, butt, shins & calves

The new Technobutter 4 material explained:

TB4: Technobutter 4 builds on the legendary Technobutter 3, the next evolution of the jersey introduces recycled yarns infused with graphene for increased wear strength and heat retention.

TB4X: Technobutter 4x goes beyond the gooey and soft feel of TB3x. Recycled graphene fibres line the jersey allowing for incredible stretch with added strength and warmth retention, all with a new look.

TB4 Firewall: The all new Technobutter 4 Firewall utilises the recycled graphene fibres at a thicker pile to create a fire hot feedback loop. As the body heat warms the graphene fibres they conduct the heat back into the body.

Click and Collect

You can place an order for click and collect if this option is shown to you at checkout. As not all stock is at our Dublin store, not all items will be available for click and collect but they may be available for shipping.

After you have placed your order, you have 7 days to collect it. When 7 days have passed we reserve the right to cancel and refund the order.

For click and collect opening hours, please always check the current opening hours in the footer at surfdock.com. Always wait for the email confirming that your order is ready for collection before coming down.


We ship orders from Ireland to Ireland and the EU. GB Shipping is suspended due to Brexit, we hope to resume this soon. We are dealing with a high order volume and dispatch orders within 1-2 business days of ordering. 

Your order value is the total calculated at checkout and you will be able to see your delivery charge before you complete the checkout process. If your order qualifies for free shipping, you will be given this option at checkout.

Republic of Ireland

Orders are shipped with DPD Courier. 

Order Value up to €74.99 costs €4.95
Order Value over €75 gets free shipping

Usually 1-2 days delivery* 


Shipping times are provided by our shipping partners, and are not guaranteed. 

Northern Ireland

Orders are shipped with DPD Courier. 

Order Value up to €74.99 costs €4.95
Order Value over €75 gets free shipping

Usually 2-3 business days* 

EU Countries (Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Rep, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Luxembourg, Malta, Monaco, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden)

Orders are usually shipped with DPD Courier

Order Value up to €149.99 costs €19.95
Order Value over €150 gets free shipping

Usually 3-5 business days to most locations, but timelines may be different for rural regions. Please contact us for Saturday delivery or Express shipping options.* 

Bulky Items

Some items may be excluded from shipping to certain locations like surfboards. Other bulky items may be available to ship at a higher charge than regular shipping rates. It will show at checkout if an item cannot be shipped. If that is the case, please feel free to contact us as we might be able to get you a custom quote for delivery. 

*Shipping times are guidelines only and cannot be guaranteed. We will send you tracking details once your order has been shipped.

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