100% cotton. Beautiful, button front, collar, long sleeve shirt from Talbots! Blue and white striped. Front and back seams. Don’t remember wearing this lovely shirt. No flaws. Size 18WP (petite) (see last photo for sizing and garment approximate measurements below) Approximate Measurements: Chest: 24” (across front) Sleeve Length: 29.5” (base of neck to sleeve hem) Hem Width: 25” (across front) Overall Length: 25” (base of neck at back to garment hem) Thank you for your time to browse my closet! I really appreciate it! Always glad to answer questions. Smoke free and dog friendly home. Inv# 166, Bin 5c