Nylon exterior with a cotton lining. Elastic cuffs, waist and collar are really good. There is one snap that's missing a ring, but it still works and isn't an issue (see pic). Chest, armpit to armpit 23 inches. Sleeve, from shoulder seam to end of cuff 25 inches.Length, from rear collar seam to bottom of waistband 24 1/2 inches. Overall, the jacket is beautiful and bright and would be really fun to wear. This item is made of nylon and cotton.