Gildan G640L Womens Softstyle Fitted T-Shirt - 4.5 oz

Body Width / Chest: Measure straight across from one underarm seam to the other (pit-to-pit).

Body Length: Measure vertically from the top center to the bottom edge on the back.

Sleeve Length: Measure from the top edge of the sleeve straight down to the bottom edge.

The chart also defines a Shoulder measurement method, but it doesn't actually provide shoulder measurements in the table, so I would leave Shoulder out of our Shopify guide rather than confusing customers.

Size Body Length Body Width / Chest Sleeve Length
S 25.25" 16" 11.5"
M 26.25" 17" 12"
L 27.25" 18.5" 12.5"
XL 28" 19.5" 13.25"
2XL 28.5" 22" 14"
3XL 29" 23.5" 15"