T-shirt, 2018 World Series Champions, Boston Red Sox. Red and white logo on navy blue base tee, back plain. MLB Genuine Merchandise, 100% cotton, made in Honduras. Tagged as a size L, Large. Sizes vary between brands - please note actual measurements. Measuring laying flat. Armpit to armpit = 21 inches. Back, down center, not counting collar band = 28 inches. Pre-owned item in good condition, light wear/use, no holes, no tears, no stains.