O'NEILL
2026 O'Neill HyperX Chest Zip Stitchless 4/3 Wetsuit
2026 O'Neill HyperX Chest Zip Stitchless 4/3 Wetsuit
When the Southern Ocean starts pumping and the temperature drops, you need more than just neoprene—you need a fortress
Low stock: 2 left
Couldn't load pickup availability
About This Product
About This Product
2026 O'Neill HyperX Chest Zip Stitchless 4/3mm | The Ultimate Thermal Shield for Cold Water
When the Southern Ocean starts pumping and the temperature drops, you need more than just neoprene—you need a fortress. The 2026 O'Neill HyperX Stitchless 4/3mm is the pinnacle of cold-water engineering, featuring O’Neill’s groundbreaking Stitchless Seam Technology (SST). By eliminating needle holes, O’Neill has virtually ended water seepage, keeping your core warmer for longer and reducing the fatigue that comes from fighting the chill. This is the suit for the dedicated charger who doesn't let a frost-covered car windscreen stop them from scoring.
Key Technical Features
-
O’Neill Stitchless Seam Technology (SST): A revolutionary construction that uses high-grade bonding instead of traditional stitching, ensuring a 100% watertight seal and maximum structural integrity.
-
All TB3X Performance Stretch: Features O’Neill’s lightest, softest, and most flexible neoprene ever, giving you unparalleled drive through your turns and a "broken-in" feel from the very first paddle.
-
Inner 360 Degree Water Barrier: A secondary internal shield that blocks any water that manages to pass through the chest zip, flushing it out before it hits your skin.
-
4/3mm Thermal Mapping: Strategically placed 4mm torso panels for core warmth and 3mm limbs for high-performance mobility, making it the perfect year-round steamer for Victoria, SA, or Tassie.
-
Double Seal Collar: A dual-layer glideskin neck seal that provides a comfortable, watertight fit to prevent high-speed flushes during heavy wipeouts.
Why You’ll Love It
The O'Neill HyperX Stitchless is for the surfer who refuses to compromise. It’s significantly lighter when wet because it doesn't soak up water through the seams, meaning you stay snappy and agile even three hours into a marathon session. If you want the warmest, most flexible 4/3mm on the rack that’s also built with Recycled Plastic to look after the playgrounds we love, this is your new go-to.
Buy Now at Welcome Boardstore for the best in authentic Surf gear and apparel. For more Surf tips, news, and brand deep-dives, be sure to check out The Welcome Journal.
Shipped Within 24 Hours
Shipped Within 24 Hours
Order by 12pm Mon-Fri to receive same-day DISPATCH
Order after 2pm and receive next business day DISPATCH.
To recieve your order before Christmas, order BEFORE THE 21ST! Orders placed after this date may not arrive on time.
Our full shipping policy can be found here
Free Returns & Exchanges
Free Returns & Exchanges
Free returns are granted if you receive an item that is faulty, or is not as described.
We do not cover return fees if you change your mind or order incorrectly.
We only accept returns to us within 14 days of date of receiving, in the condition that you received it and we will happily exchange it or issue a refund. *Conditions Apply.
PLEASE NOTE: Sale items are offered at significantly discounted prices so please choose carefully as we WILL NOT offer exchanges or returns on sale items.
Our full return policy can be found here
Happiness Guarantee
Happiness Guarantee
We want you to be happy with the product you buy, so all our products offer a 12-month repair and replacement warranty for factory defects or manufacturing errors.
All warranty claims and repairs must only be assessed by the manufacturer and/or manufacturer's representative and will be repaired, replaced, or credited at their discretion excluding any shipping fees.
A valid proof of purchase will be required for all warranty claims.
Contact us on support@welcomeboardstore.com.au or call 039781472 for more information.
About O'Neill
O'Neill is a globally recognized surf, snow, and lifestyle brand founded in 1952 by Jack O’Neill in California, USA. Originally known for inventing the first neoprene wetsuit, the brand has since expanded into a leader in surf and snowboard apparel, outerwear, and accessories. With deep roots in water and winter sports, O’Neill is known for its high-quality, performance-driven products designed for surfers, snowboarders, and outdoor enthusiasts. The brand’s snowboard gear includes technical outerwear, base layers, and snow accessories designed for comfort, warmth, and performance in extreme conditions. O’Neill continues to innovate in sustainability, incorporating eco-friendly materials into its wetsuits, snow gear, and casualwear. Their commitment to environmental responsibility aligns with their passion for nature and adventure.
Subscribe To Our Emails
Be the first to know about new collections and exclusive offers instore and online.