1. Lay it flat
Measure a garment that already fits. Do not measure around your body unless the product chart explicitly says to.
SIZE GUIDE
GUESSING IS HOW THIS BECOMES OUR PROBLEM.
Different garments use different blanks and fits. The exact chart attached to the product you are buying controls. Do not reuse a tee chart for a hoodie and then act surprised.
Before ordering: open the product page, choose the intended garment, read its exact measurements, compare them with a similar item you already own, and select the size shown by that product's chart.
2. Match the chart
Compare width and length using the same measurement method shown on the product page.
3. Check the fit
Unisex, fitted, relaxed, hoodie, and crewneck cuts are not interchangeable facts.
Ordering the wrong size or color is not a covered defect when the ordered option was made correctly. If the delivered garment materially differs from the published chart, use Report an Order Problem and include laid-flat measurement photos.