Leatt All Mountain 1.0 MTB Helmet Jr 2025: LIME XS 50-54CM
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The perfect lightweight junior helmet offering head and brain protection.
This is a lot of helmet for the price. It offers extensive protection around the head and a deeper rear coverage. Perfect for junior riders that need a little bit more protection. It also includes Leatt’s 360 Turbine technology, which is proven to reduce the risk of concussion by up to 30% and rotation forces upon impact by 40%.
No need to keep taking it on and off either. Lightweight and with 14 Maxiflow air channels, the lightweight construction also offers great ventilation for those hot days.
- Brand
- Leatt
- Category
- Helmets
- Discipline
- MTB
- Gender
- Youth
- Colour
- Aqua, Black, Camo, Lime, Red
- SKU
- LE1022070740
On orders over £50. Express next working day on items in stock at Biggin Hill.
From Biggin Hill, usually ready in 1 hour.
On unused items in their original packaging.
Leatt helmets
Fit tip If you land between two sizes, go up a size and dial the helmet in with its fit adjuster.
How to measure
Take a soft tape measure and wrap it around your head about 2 cm above your eyebrows and the tops of your ears, keeping it level all the way round. Note the measurement in cm and find it in the table. If you land between two sizes, go up a size and dial the helmet in with its fit adjuster. A helmet should sit level, snug but not tight, and not move when you shake your head.
Find my size
Enter what you can measure; we'll match it to the table.
Adult helmets
| Size | Head circumference (cm) |
|---|---|
| S | 51-55 |
| M | 55-59 |
| L | 59-63 |
This table covers Leatt adult helmets. Leatt junior helmets are sized differently; the size on each junior product page is the one to go by.
Reviews
What riders say
Leatt helmets
Fit tip If you land between two sizes, go up a size and dial the helmet in with its fit adjuster.
How to measure
Take a soft tape measure and wrap it around your head about 2 cm above your eyebrows and the tops of your ears, keeping it level all the way round. Note the measurement in cm and find it in the table. If you land between two sizes, go up a size and dial the helmet in with its fit adjuster. A helmet should sit level, snug but not tight, and not move when you shake your head.
Find my size
Enter what you can measure; we'll match it to the table.
Adult helmets
| Size | Head circumference (cm) |
|---|---|
| S | 51-55 |
| M | 55-59 |
| L | 59-63 |
This table covers Leatt adult helmets. Leatt junior helmets are sized differently; the size on each junior product page is the one to go by.
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