As these are our own production, we decided the cut: the hole for the head is reasonably-sized and the hem is properly long. These are form-fitting and stretch to fit.
Below is a chart of measurements of the garment itself. Don't be alarmed by the seemingly small numbers - the widths easily stretch about 30% from these values.
Metric size chart
Shirt size | Chest circumference | Waist circumference | Back length
X-Small | 61 cm | 52 cm | 61 cm
Small | 68 cm | 60 cm | 63 cm
Medium | 76 cm | 68 cm | 65 cm
Large | 82 cm | 76 cm | 67 cm
X-Large | 94 cm | 90 cm | 68 cm
2X-Large | 104 cm | 100 cm | 69,5 cm
3X-Large | 116 cm | 112 cm | 71 cm
4X-Large | 128 cm | 124 cm | 72,5 cm
Our model in the main picture has a chest circumference of 102 cm and wears size Medium.
Imperial size chart
Shirt size | Chest circumference | Waist circumference | Back length
X-Small | 24" | 20.5" | 24"
Small | 27" | 23.5" | 25"
Medium | 30" | 27" | 25.5"
Large | 32.5" | 30" | 26.5"
X-Large | 37" | 35.5" | 27"
2X-Large | 41" | 39.5" | 27.5"
3X-Large | 45.5" | 44" | 28"
4X-Large | 50.5" | 49" | 28.5"