YOU ARE BUYING: CREW NECK T-SHIRT AVAILABLE IN BOTH CHILDS ADULTS SIZES CHOOSE FROM: PLAIN T-SHIRTS PRINTED T-SHIRTS STRIPED T-SHIRTS SIZE GUIDE: APPROXIMATE MEASUREMENTS BELOW PLEASE ALLOW 1/2 INCHES FOR HUMAN ERROR ADULTS SMALL CHEST: 37” LENGTH: 26” MEDIUM CHEST: 39” LENGTH: 27” LARGE CHEST: 42” LENGTH: 27” X-LARGE CHEST: 44” LENGTH: 28” XX-LARGE CHEST: 45” LENGTH: 29” XXX-LARGE CHEST: 48” LENGTH: 30” CHILDS Small (4 - 6 years) Chest 24.5" (62cm) Length 17" (43cm) Medium (7 - 9 years) Chest 28" (72cm) Length 19" (48cm) Large (10 - 12 years) Chest 30.5" (78cm) Length 19" (48cm) X-Large (13 - 14 years) Chest 31.5" (80cm) Length 20.5" (52cm).