Size Guide T-shirts
Find Your Perfect Fit
Left: Fitted female fit - Right: Classic Unisex fit
Every birder knows that comfort matters. Whether you're exploring woodland trails at sunrise or scanning the shoreline for seabirds, your T-shirt should move naturally with you.
Below you'll find the exact measurements of our shirts. For the best fit, we recommend measuring a T-shirt you already enjoy wearing and comparing it with our size chart.
Our shirts are available in two fits:
- Classic fit – relaxed and comfortable
- Fitted fit – slightly more tailored and fitted
How to measure your favourite T-shirt
A) Length
Place the end of the tape beside the collar at the top of the tee (Highest Point Shoulder). Pull the tape measure to the bottom of the shirt.
B) Width
Place the end of the tape at the seam under the sleeve and pull the tape measure across the shirt to the seam under the opposite sleeve.
C) Sleeve length
Place one end of the tape at the top of the set-in sleeve, then pull the tape down until you reach the hem of the sleeve.

Now find your perfect fit:
Classic/Unisex Fit
| Size Label | Length (cm) | Width (cm) | Sleeve length (cm) |
| S | 69 | 49.5 | 22.5 |
| M | 73 | 53.5 | 24 |
| L | 75 | 56.5 | 24.5 |
| XL | 77 | 59.5 | 25 |
| 2XL | 79 | 63.5 | 25.5 |
| 3XL | 81 | 67.5 | 26 |
| 4XL | 83 | 72.5 | 26 |
| 5XL | 84 | 77.5 | 26 |
Product measurements may vary by up to 5 cm.
Fitted women's Fit
| Size Label | Length (cm) | Width (cm) | Sleeve length (cm) |
| S | 59.5 | 48 | 18.5 |
| M | 61.5 | 51 | 19 |
| L | 63.5 | 55 | 19.5 |
| XL | 65.5 | 60 | 20 |
| 2XL | 67.5 | 65 | 21 |
Product measurements may vary by up to 5 cm.