Y.A.S Size Guide
Y.A.S uses three parallel systems – alpha sizes XXS–XXL for most clothing, EU numeric sizes 32–46, and jeans by waist size 24–36 – with body measurements in cm for each; no UK or US conversion is published.
Body measurements (cm)
Alpha sizes
| Size | Chest | Waist | Hips |
|---|---|---|---|
| XXS | 78 | 60 | 86 |
| XS | 82 | 64 | 90 |
| S | 86 | 68 | 94 |
| M | 90 | 72 | 98 |
| L | 96 | 78 | 104 |
| XL | 102 | 84 | 110 |
| XXL | 110 | 92 | 118 |
EU sizes
| Size | Chest | Waist | Hips |
|---|---|---|---|
| 32 | 78 | 60 | 86 |
| 34 | 82 | 64 | 90 |
| 36 | 86 | 68 | 94 |
| 38 | 90 | 72 | 98 |
| 40 | 95 | 77 | 103 |
| 42 | 100 | 82 | 108 |
| 44 | 105 | 87 | 113 |
| 46 | 110 | 92 | 118 |
Jeans & trousers
| Waist size | Waist (cm) | Hips (cm) |
|---|---|---|
| 24 | 59.5 | 85.5 |
| 25 | 62 | 88 |
| 26 | 64.5 | 91.5 |
| 27 | 67 | 93 |
| 28 | 69.5 | 95.5 |
| 29 | 72 | 98 |
| 30 | 74.5 | 100.5 |
| 31 | 77 | 103 |
| 32 | 79.5 | 105.5 |
| 33 | 82 | 108 |
| 34 | 84.5 | 110.5 |
| 35 | 87 | 113 |
| 36 | 89.5 | 115.5 |
Jeans inseams are the same for every size: normal length 76–79 cm, ankle length 70–72 cm, cropped length 65–68 cm.
How to measure
- Chest: measure at the widest part of the chest.
- Waist: measure at the narrowest part of the waist.
- Hip: measure at the widest part of the hip.
- Inseam: measure from crotch to ankle bone.
Source: Y.A.S’ official size guide, checked 20 October 2026. Sizes can vary by style – if you’re between sizes, email info@willow.ie and we’ll measure the garment for you.
