How to Measure: All measurements are in inches. When in doubt, size up.

T-Shirts (Relaxed fit):
S: Chest 34–36", Length 27"
M: Chest 38–40", Length 28"
L: Chest 42–44", Length 29"
XL: Chest 46–48", Length 30"
2XL: Chest 50–52", Length 31"
3XL: Chest 54–56", Length 32"

Hoodies & Sweatshirts:
S: Chest 37–39", Length 26", Sleeve 32"
M: Chest 40–42", Length 27", Sleeve 33"
L: Chest 43–45", Length 28", Sleeve 34"
XL: Chest 46–48", Length 29", Sleeve 35"
2XL: Chest 49–51", Length 30", Sleeve 36"
3XL: Chest 52–54", Length 31", Sleeve 37"

Hats:
S/M: Head Circumference 21.5–22.5"
L/XL: Head Circumference 22.5–23.5"
One Size: Adjustable