Biceps

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Place your shirt button-side up on a flat surface. Button it up and run your hands along the fabric to give you an accurate reading.

Place the end of your tape measure at the seam of your shirt's armpit. Extend the tape measure to the opposite end, making sure it forms a 90-degree angle with the shoulder seam.

Things to consider

- Make sure that the sleeve is straight while measuring.

- Round it off to the nearest centimeter of quarter of an inch.

- Do not add anything extra for the shrinkage, we will do that for you.