World Aquatics Approved (WA) Swimwear Explained
World Aquatics approval comes up in almost every race suit conversation we have. Parents want to know if a suit is legal, swimmers want to know if it's allowed at county champs, and everyone wants to know what the little label inside actually means. This explainer is part of our racing and competition guides.
What is World Aquatics (WA) approval?
World Aquatics is the international governing body for swimming. It sets rules on what competition swimwear can be made of and how much of the body it can cover, and it tests suits submitted by manufacturers against those rules. Suits that pass are added to its list of approved swimwear, which is published on 1 September each year.
The rules exist to keep racing fair after the era of super-suits, when polyurethane suits added buoyancy and helped swimmers break world records at a startling rate. Today, suits must be made of textile materials, and there are limits on coverage: men's suits can't extend above the navel or below the knee, and women's suits can't cover the neck, extend past the shoulders or go below the knee.
Where is approved swimwear required?
Where Approval Applies
| Competition | Approved suit needed? | Notes |
|---|---|---|
| World Aquatics events and Olympic Games | Yes | Every suit must be on the current WA list. |
| Qualifying events for World Championships and Olympics | Yes | Same requirement as the main events. |
| WA-sanctioned international events | Yes | Includes continental championships. |
| World record attempts | Yes | Records only stand in approved swimwear. |
| National, county and club meets | Set by the national body | Check the meet pack and governing body rules. |
World Aquatics states plainly that national-level events follow the rules of each country's member federation. You can read this on World Aquatics' approved swimwear page. In the UK, that means Swim England, Scottish Swimming and Swim Wales.
How do you check if a suit is WA approved?
Approved suits carry the World Aquatics approval mark, usually on a label inside the suit, and appear on the published approved list. If you're buying from an authorised UK stockist, the product details will say whether a suit is approved. Our women's racing swimwear lists approval on each racing product.
The mistake: Buying a second-hand race suit online without checking it's genuine and on the approved list.
What happens: Counterfeit race suits do circulate, and a fake won't carry valid approval or perform like the real thing. At a meet where approval is checked, it can't be worn.
How to avoid it: Buy from an authorised UK stockist, check the approval mark, and ask our swimwear experts if you're unsure about a specific suit.
How do junior swimwear rules fit in?
Some governing bodies add age-group rules on top of WA approval. In Scotland, technical suits are restricted for swimmers aged 13 and under at meets held under Scottish Swimming rules. Our parent's guide to choosing a first race suit explains what to check.
Approval and age rules are separate questions. A suit can be WA approved and still not be allowed for a young swimmer at a particular meet, so always check both.
Which suits are WA approved?
Most race suits from the major brands are WA approved, including racing kneesuits and racing jammers across entry, mid and top tiers. Training suits generally aren't submitted for approval, because they're not designed for top-level competition. Our men's racing jammers include suits at every level.
THREE THINGS TO CHECK
THREE THINGS TO CHECKThe label
The labelLook for the World Aquatics approval mark on the suit.
The meet pack
The meet packCheck what the competition requires for swimwear.
The age rules
The age rulesCheck whether any age-group restrictions apply.
Does approval affect how you care for a suit?
No, but race suits need careful handling either way. Put them on slowly, avoid training in them and rinse after every use. Our guide to putting on a race suit without damaging it explains how. For longer-term care, see our swim kit care guide.
Why Buy WA Approved Swimwear From Allens Swimwear
As an authorised UK stockist, every race suit we sell is genuine, and our swimwear experts check approval questions daily.
Written by a swimwear specialist at Allens Swimwear, 50 years of expert fitting. Updated 5 October 2026. Swimwear rules change: check the current World Aquatics list and your meet's rules before racing.
Frequently Asked Questions
What does WA approved mean on a swimsuit?
It means World Aquatics has tested the suit and confirmed it meets its rules on materials, thickness, buoyancy and coverage. Approved suits appear on the World Aquatics list of approved swimwear.
Do I need a WA approved suit for a club gala?
Not usually. National and club competitions follow the rules of the national governing body and the meet pack, so check those. Approved suits are required at World Aquatics events and their qualifiers.
How often is the World Aquatics approved swimwear list updated?
World Aquatics publishes its list of approved swimwear on 1 September each year.
Are training swimsuits WA approved?
Generally not. Training suits aren't designed for top-level competition and usually aren't submitted for approval. Race suits from the major brands typically are.
Can a junior swimmer wear a WA approved suit?
It depends on the meet and age-group rules. In Scotland, technical suits are restricted for swimmers aged 13 and under, so check the meet pack and your governing body's rules.