Simma Shirt
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.
Description
The Simma Shirt features a classic shirt collar and long sleeves with buttoned cuffs for a polished look. Its regular fit ensures comfort throughout the day, while the button fastening offers a clean, versatile style suitable for both professional and casual settings.
- Fabric Composition: 100% Cotton
Delivery
Free delivery on Irish orders over €85 (€6.50 under). Order before 1pm Monday to Friday and we'll post it the same day — most parcels land within 1–2 working days. Prefer to collect? Choose Click & Collect at checkout and pick it up in the shop on O'Connell Street, free. UK and international rates are on our Delivery page.
Returns
Not right? You've 28 days from delivery to send it back for a full refund — unworn, tags on. Drop it into the shop and we'll refund you on the spot; post it back and we'll process it within 5 working days of it reaching us. Full details on our Returns page.
