100% Pima Peruvian cotton, finely knit lightweight long sleeve crew. Textured stitch with natural built in stretch and ease. Washable cotton that wears well from season to season. Model is 5 7" and wearing OS-Petite. OS-Petite: Total length 19" | Armpit to armpit: 19"  OS: Total length 21.5" | Armpit to armpit: 21.5" Hand made fairly in Peru.