ONeill Womens Ninja 5/4mm CZ Full Wetsuit

The O'Neill Women's Ninja 5/4mm CZ Full Wetsuit is a performance-minded winter wetsuit for riders who want proper cold-water capability without leaping straight to the very top of the price ladder. It is aimed at regular sessions, colder water and people who care about warmth, flexibility and a cleaner fit on the water.

The Ninja is a winter performance suit for riders who want a more technical feel than entry-level options, but who may not need the price tag of O'Neill's most premium cold-water suits.

Why we recommend it

• Serious cold-water warmth for riders who are out in winter, early spring or late autumn and do not want to cut sessions short.
• Full-suit coverage gives you more protection from water temperature, windchill, sun and abrasion on longer sessions.
• Chest zip entry gives a more sealed, performance-led feel with less flushing and better freedom through the shoulders.
• A more technical winter build than entry-level suits, with a chest zip design and performance feel that suits regular cold-water use.

Specifications

• Product type: Wetsuit
• Thickness: 5/4mm
• Entry: Chest zip
• Coverage: Full suit
• Best for: cold-water UK riding, winter use and longer sessions in harsher conditions
• Tech highlights: TechnoButter 3 neoprene, TechnoButter 3X panels, Krypto knee pads

What's included

• 1 x O'Neill Women's Ninja 5/4mm CZ Full Wetsuit
• Any accessories, footwear or other layers shown are not included.

Explore more

Browse more options in our women's wetsuit collection. If you want an easier-entry winter suit at a lower price, compare it with the Women's Epic 5/4 Back Zip. If you want to step into premium cold-water performance, look at the Women's Hyperfreak Fire 5/4 Chest Zip.

FAQs

For most UK riders, yes — this is cold-water territory. It is the sort of thickness we recommend for winter, early spring and late autumn, especially if you feel the cold or stay out for longer sessions.

Chest and front zip designs usually feel more secure and performance-led on the water. They tend to flush less and leave the shoulders feeling freer, although they can take a little longer to get into.

The Ninja is a very good fit for riders who want a more technical winter suit than an entry-level option, but do not necessarily need to spend premium money. It is a stronger choice if you value performance and sealed warmth.