Size medium has a 30" front body length, a 30½" back body length, an 18½" shoulder, a 43" chest, and a 34½" sleeve length. Sleeve length changes 1" between sizes. Button-down collar. Buttoned placket. Long sleeves with buttoned barrel cuffs. Split back yoke with a box pleat ensures a comfortable fit and a greater range of motion. Signature embroidered Pony at the left chest. Cotton. Machine washable.