How-to Sizing Guide
STEP 1: Grab your favorite t-shirt and lay it flat. Then follow instructions below to match with the product's sizing table:
Measure 1 inch under the left armpit, to 1 inch under the right armpit.
Measure 1 inch under the left armpit, to 1 inch under the right armpit, and multiply that number by 2.
Measure from the top of the shoulder next to the collar straight to the bottom of the shirt.