O'NEILL PSYCHO TECH 4/3 BACK ZIP FULL WETSUIT
O'NEILL PSYCHO TECH 4/3 BACK ZIP FULL WETSUIT
O'NEILL PSYCHO TECH 4/3 BACK ZIP FULL WETSUIT

O'NEILL PSYCHO TECH 4/3 BACK ZIP FULL WETSUIT

$350.98
$350.98
$539.95
Sold Out

Size: MT

COLOR: BLACK

Back to Surf Accessories Previous Product Next Product

All orders ship within one business day. Shipping charges and transit times display at checkout, or see our shipping policy page for more details. Orders over $50 (excluding surfboards) qualify for FREE Economy Shipping!

Return shipping is free within 90 days of purchase for all retail merchandise (everything except surfboards). Surfboards sales are final, no returns.

Give us a ring at 800-265-8882 or email retail@stewartsurfboards.com with any questions!

We want you to be 100% stoked with your purchase! For all non-surfboard items, we accept returns on unused items with tags attached. Full refund (less any shipping fees paid) for items returned within 30 days, or store credit for items returned after 31-90 days. You can contact us for a free return shipping label if your order was shipped to an address in the contiguous U.S.

All surfboard sales (new and used boards) are final, no returns.

Check out our return policy page for all the details. Give us a ring at 800-265-8882 or email retail@stewartsurfboards.com with any questions!

Description

O'Neill's Psycho Tech range focuses on ultimate warmth and durability with high-performance recycled materials and water-tight double-sealed stitchless seams. Sustainable TB4 Firewall technology radiates throughout with TB4 Duraskin Air Firewall in the chest and back to shield against the cold while retaining and recirculating your body heat. Designed to keep you in the water longer, toasty, and stoked.

  • Z.E.N. Zip Closure (Back Zip)
  • Redzone Water Resistant Zipper
  • Anti-Flush Barrier (Z.E.N. Zip)
  • Super Seal Cuffs with Plasma Wrist and Ankle Seals
  • Recycled Oyster Shells and Eco Carbon Black Infused Neoprene
  • Recycled Dope-Dyed Yarn Jersey
  • Aqua Alpha Solvent Free Neoprene Lamination
  • Key Pocket with Loop
  • Stitchless Exterior Fluid Seam Weld Technology with Interior Recycled TBX Tape
  • Chest / Back: TB4 Duraskin Air Firewall
  • Thigh / Butt / Shins / Calf: TB4 Firewall
  • Arms / Shoulders: TechnoButter 4
  • Entry: TechnoButter 4X
  • PLUS (+) = 0.5mm Extra thickness for even more warmth

You also Viewed

Sale
O'NEILL PSYCHO TECH 4/3 BACK ZIP FULL WETSUIT
$350.98
$350.98
$539.95
Stewart Mid-Length 6'6" 2FUN (6'6", 21 1/2", 2 3/4") B#128485 clear and sand only
6'6" 2FUN (6'6", 21 1/2", 2 3/4") B#128485
$1,025.00
$1,025.00

ABOUT

Stewart surfboards are for pros, beginners, aging surfers, and anyone in-between.

Whether you live in SoCal or Southern France, and are looking to steal back your freedom from life's daily grind, Stewart Surfboards designs and builds boards that crush your expectations. Now you can be at one with the ocean, on the perfect wave, on the perfect board.

CONTACT

(800) 265-8882 or (949) 492-1085
retail@stewartsurfboards.com

2102 S. El Camino Real
San Clemente, CA 92672

Store Hours:

9am to 5pm every day

Special Hours:

9am - 2pm Super Bowl Sunday (Feb 9, 2025)

CONNECT

Join our mailing list for updates

EXPLORE

© 2025 Stewart Surfboards • Powered by Shopify