First party
Joni size guide: how to measure and choose your size
Measure seven points over your base layer, check the fit seated, and see what to do between sizes for Joni race suits, gloves and leather gear.
To choose your Joni size, take seven body measurements with a soft tape while wearing the base layer you race or ride in. Compare them with the chart for the exact product you own or plan to order, then check the fit sitting in your driving or riding position, not standing.
If your numbers fall between two sizes, contact support before you order. Stores give three different rules for this case, and a wrong size can be costly to exchange.
Also in owner support: returns and exchanges for fit · caring for your Joni gear · warranty registration
Quick answers- Measure over the base layer you will wear under the suit.- Have someone else hold the tape, and do the fit check seated.- Gloves are sized by a tape around the hand just below the knuckles.- Between sizes? Store advice differs, so ask support before ordering (see the table below).
Before you measure
You need a soft tape measure, a helper and the base layer you plan to wear under the suit. Write each number down as you go.
Measure each driver or rider separately. For a team order, never order one size for everyone.
Race suit: the seven measurement points
Size charts for car race suits use seven points:
Where to measure the waist
Store guides do not agree on this point. One product page says about 5 cm (2 in) below the navel, the size-chart page says 6 cm (2.4 in) below it, and a measuring guide says in line with the navel.
Use whatever the Joni chart for your product says. If it does not say, note where you measured when you contact support.
| Point | Where to measure |
|---|---|
| Neck | About 2 cm (0.8 in) below the Adam's apple, around the neck |
| Sleeve | From the shoulder point, down the outside of a slightly bent arm, to the wrist |
| Chest | Around the widest point, breathing normally |
| Waist | Around the waist (sources differ on the exact height, see below) |
| Hips | Around the widest point |
| Inseam | From the crotch down to just above the ankle bone |
| Height | Head to floor, no shoes, feet together |
Check the fit seated, not standing
A race suit is worn sitting down, so judge the fit in your driving position. You should be able to reach the wheel and pedals easily, and the suit should not pull at your back or knees.
With your feet on the pedals, the legs should reach your ankle bone and overlap your racing shoes by at least 1 in (2.5 cm).
Gloves
Wrap a soft tape around your hand just below the knuckles (the widest part) without pulling it tight. Driving gloves should feel snug, with no loose material at the fingertips.
Check that the chart and the size list match before you order. On one store glove page, the sizes for sale run from 6XS to 2XL, but the chart runs from XS to 3XL. Another store page talks about measuring hand length and width, while the chart uses the measurement around the hand.
Leather riding gear
Joni leather riding gear is measured with the same tape-and-helper method. The leather store and its chart are still to be confirmed, so this page does not give leather sizes.
Between sizes: three different store rules
These rules conflict, so don't guess. Send your numbers to support and ask which size or option to order.
| Store page | What it says when you are between sizes |
|---|---|
| Car suit product page | Choose the Custom Size option |
| Car suit category page | Measure again and pick the size that lets you move freely |
| Glove product page | Take the bigger size |
Sizes above the chart
The car suit chart stops at XXL (US 50 / EU 60), but suits are offered up to 5XL. If you need 3XL or larger, ask support for the measurements behind that size before you order.
Custom size and timing
If your numbers match no standard size, one store page points you to the Custom Size option. You send your measurements with your order number before production starts.
Custom orders take longer. Store pages give 4–6, 4–8 and 6–10 weeks depending on the page and the build, so confirm the date if you have an event coming up.
Size exchanges can carry a 25% restocking fee plus shipping, and custom items are handled differently. Read returns and exchanges for fit before you order.
Where to order Nomex race gear
Fire-resistant car race suits are listed on Moto Speeds car racing suits. Check the chart on the product page against your numbers.
FAQ
What size racing suit do I need?
The size whose chart numbers match your chest, waist, hips and inseam, measured over your base layer. Then check the fit sitting in the car.
How do I tell my suit size?
Measure the seven chart points with a helper and compare them with the chart for that exact suit. Charts are product-specific, so don't reuse a size from another brand.
Should I measure with my base layer on?
Yes. One store tells you to wear the base layer you plan to use under the suit when you measure.
joni.us Editorial Team
joni.us articles are researched from published sources, cited in the text, and reviewed before publication.