Details like water-repellent ripstop and a removable hood mean this 650-fill-power down jacket will keep him warm and dry. Shell: 100% polyester. Lining: 100% nylon. Fill: 75% white duck down, 25% white duck feathers. Machine washable. Size 4/4T has a 17" body length and a 21" sleeve length. Sleeve length is taken from the center back of the neck. Reflective signature pony at the left chest. Mockneck.