Official sizing data sourced from limar.com/pages/sizing-chart
Helmet Size Chart — Head Circumference (cm)
Measure around the widest part of your head, roughly 2.5 cm / 1 inch above your eyebrows.
| Model | Small (S) | Medium (M) | Large (L) |
|---|---|---|---|
| Air Atlas & Air Atlas UAP | 52 – 56 cm | 54 – 58 cm | 57 – 62 cm |
| Air Pro / Air Pro MIPS | 53 – 56 cm | 54 – 58 cm | 57 – 61 cm |
| Air Speed / Air Speed MIPS | 52 – 56 cm | 54 – 58 cm | 57 – 61 cm |
| Air Stratos / Air Stratos MIPS | — | 53 – 57 cm | 57 – 61 cm |
| Air Star | — | 53 – 57 cm | 57 – 61 cm |
| Air Master | — | 53 – 57 cm | 57 – 61 cm |
| Livigno MIPS (MTB) | — | 53 – 57 cm | 57 – 61 cm |
| Etna MIPS / Tonale / Selva / Delta | — | 53 – 57 cm | 57 – 61 cm |
| Alben MIPS (MTB) | — | 53 – 57 cm | 57 – 61 cm |
| Alien | 53 – 56 cm | 54 – 58 cm | 57 – 61 cm |
Key:
- S–L available: Air Atlas, Air Pro, Air Speed, Alien
- M & L only: Air Stratos, Air Star, Air Master, Livigno, Etna, Tonale, Selva, Delta, Alben
- Fit note: Overlapping ranges are intentional — the retention system adjusts to cover them. If between sizes, pick the larger for comfort or the smaller for a race-fit.
Eyewear — Fit & Selection Guide
Limar does not publish a numbered size chart for sunglasses; frames are one-size or sized by model. Use facial measurements to select:
| Fit Category | Approx. Face Width | Lens Width Guide | Best For |
|---|---|---|---|
| Small / Narrow | < 138 mm | ≤ 51 mm | Narrow faces, smaller heads |
| Medium / Standard | 138 – 144 mm | 52 – 54 mm | Most adults |
| Large / Wide | ≥ 145 mm | ≥ 55 mm | Wider faces, larger heads |
Quick Fit Tips
- Temple length (arm length): typically 135–145 mm for Limar eyewear.
- Bridge fit: Narrower nose → smaller frame; wider nose → look for wider bridge design.
- All Limar sunglasses use adjustable nose pads and curved temples to accommodate most head shapes within the model range.
- If you share a helmet size: S helmet → narrow/small face, M → medium, L → wide/large is a helpful starting point.
How to Measure Correctly
- Head circumference: Use a flexible tape measure around the widest part of your head, ~2.5 cm above eyebrows and ears.
- Take 2–3 measurements and use the largest number.
- Fitting: Helmet should sit level, cover top of head, not rock side-to-side. Once adjusted, you should not be able to move it without pulling skin.