Size Chart - Men's Long Sleeve Thermal Shirt
| Size | Width | Height | Sleeve Length |
| S | 17.5" | 26" | 33" |
| M | 19" | 27" | 34" |
| L | 20.5" | 28" | 35" |
| XL | 22 | 29" | 36" |
| 2XL | 23.5" | 30" | 37" |
Measurement Notes
- Width is measured across the chest, 1" below armhole.
- Height is measured in the front from the highest point of the shoulder to the hem.
- Sleeve Length is measured from the top of the shoulder to the end of sleeve.