Men's T-Shirt Wash Tip
Athletic Heather and all solid colours (ex: White, Black, Royal, Gold... etc.) will shrink. Wash in cold water and hang to dry, or tumble dry on LOW to minimize shrinking.
All other Heather colours (ex: Charcoal Heather, Teal Heather, etc.) will only shrink a little. Hang to dry or tumble dry on low to reduce even minimal shrinking.