DOES NOT FIT TWIN BEDS Fits a standard size toddler/crib mattress 28 x 52 . Worthy of a Disney Princess: the Disney Frozen 4 Piece Toddler Bed Set - Multicolor Toddler. All the most favorite characters from Disney Frozen are included on the colorful print; set includes a pillowcase fitted sheet flat sheet and cozy comforter all sized for that first big-kid bed. The toddler bed set is a must-have for any little kid who dreams of fairy tales and loves themed bedding.