Zenana Outfitters Women's Crew Neck Long Sleeve Basic T-Shirt Some colors are 95% Cotton 5% Spandex and others are 60% Cotton, 35% Polyester, 5% Spandex SMALL-UNDER TO UNDERARM-14" unstretched, 16" from underarm to bottom of hem, 14" straight across from shoulder to shoulder seam, 24" long sleeves MEDIUM-UNDER TO UNDERARM-15" unstretched, 16" from underarm to bottom of hem, 14 1/2" straight across from shoulder to shoulder seam, 24" long sleeves LARGE-UNDER ARM TO UNDERARM-16" unstretched, 17" from underarm to bottom of hem, 15" straight across from shoulder seam to shoulder seam, 24" long sleeves Tees are fitted.