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O'Neill Wetsuits

O'Neill Men's Psycho One 4/3mm Back Zip Full Wetsuit

  • Based on 22 reviews
Condition: New
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$319.96 Why this price?
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Sep 1
Order within 5 hours and 19 minutes
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Size: Medium Tall


Color: Black/Black


Description

The unparalleled premium in lightweight flexibility. Patented Z.E.N. zip closure (Back Zip). Anti-Flush Barrier (Z.E.N. Zip). Minimal Seam Design. Seamless Paddle Zones. Plasma Wrist and Ankle Seals. Krypto Knee Padz. Fluid Seam Weld. Full Body: TechnoButter 3.

Package Dimensions ‏ : ‎ 19 x 12 x 3.5 inches; 3.5 Pounds


Department ‏ : ‎ mens


Date First Available ‏ : ‎ May 18, 2017


Manufacturer ‏ : ‎ O'neill


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Hang 10 or hang out all day while staying warm
Size: X-Large Color: Black/Black
Great Wetsuit.
Reviewed in the United States on January 2, 2022 by TR Boy
    • Absolutely love it!
Super warm and comfy right away in 55 deg water with 4/3. Almost forgot I was wearing a suit! I’m 6’4 at around 200 lbs and the Large/tall is a great fit. Well worth the money!
Reviewed in the United States on September 18, 2019 by Vince B.
    • Good choice
fits perfect and you don't feel like wearing a thick 4/3 wetsuit when paddling. neverthless it keeps pretty warm in cold water around 55 °F
Reviewed in the United States on August 6, 2020 by Florian Popp
    • 4.5 stars
If it were not for some neck discomfort when swimming this would be a 5 star wet suit. This 4/3 Psycho is one tight puppy with minimal water flushing. Best wet suit out of 10 wet suits I have worn / owned. Not cheap at over $400.00. Durability, too soon to know. Hoping for 2-3 years This is an update 1 1/2 years later. I am downgrading the review to 1 star and I am being kind. The neck collar is about to tear apart as is the ankle part on both legs. I use the wetsuit maybe once a week swimming. I do not surf. I expect more for over $400.00. This wetsuit's durability is far worse than a far cheaper O'Neill wetsuit. I cannot recommend O'Neiil wetsuits. Will not ever purchase another O'Neill wetsuit ... show more
Reviewed in the United States on January 9, 2020 by R. E.
    • Best wetsuit. Love the Technobutter 3.
Size: Small Color: Black/Black
Love the wetsuit! Best 4/3, I’ve owned! Fast shipping.
Reviewed in the United States on December 2, 2020 by Jeff B
    • Great suit!
Warm and easy to move in. Great wetsuit
Reviewed in the United States on December 11, 2019 by Michael Monte
    • GREAT!
love this suit. picked it up at a local surf shop and can't believe how comfortable. I was worried about the back zip, but with Oneil's closure system, i am starting to LOVE the back zip. My old rip curl chest zip put too much pressure on my shoulders. The back zip is way easier to take on and off and provides more flexibility in the shoulders. Great wetsuit. I surf south SD and picked up the 4/3 ... show more
Reviewed in the United States on June 14, 2019 by Ana Hardy
    • Solid suit for a good price. Not seal taped on the inside but ...
Solid suit for a good price. Not seal taped on the inside but extremely flexible and super light. Will see how it lasts, so far bueno.
Reviewed in the United States on July 15, 2018 by Gerard Ages

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