USPS ReadyPost Mailing Carton - Mickey & Pluto (Set of 3) Set of 3 USPS ReadyPost corrugated shipping cartons (self-closing) Each assembled box measures 17 5/8" x 12 1/4" x 3" Fun, fresh, colorful image of Mickey & Pluto on both sides Perfect size for gift-giving to your favorite Disney fan Postage-ready (postage not included)