Boston Red Sox 3T Sleeveless Jersey Warmup (Navy) Adidas - Brand is Adidas. Sz is Toddler 3T. 100% polyester. Embroidered logo. No tags so compared to other jerseys for sizing. Armpit to armpit approx 13 inches, top to bottom of item approx 15.5 inches. Item is in EXCELLENT used condition!!! 917