Youth Rosie Arch Madness Solid Black TriBlendMom's Matching Shirt 3. 8 ounce, 50 25 25 poly Airlume combed and ring spun cotton rayon BC3413Y Care Instructions Machine wash cold, inside out with like colors. Only non chlorine bleach when needed. Tumble dry medium. Do not iron. Size Chart S M L XL Size 6 8 10 12 14 16 18 20 Chest 28 30 30 32 32 34 34 36 How To Measure Chest Width Measure under the arm and around the fullest part of the chest with arms down, keeping tape horizontal.