Disney Baby - Mickey Mouse - My Pal Crib Sheet. Settle your baby into sweet slumber atop this adorable pattern of Mickey's all-over iconic silhouette print in bold blues, vibrant reds, and crisp whites. Fitted crib sheet fits a standard size crib mattress 28" x 52". 100% Cotton fabric. Coordinates with the full line of Disney Baby My Pal nursery bedding and dÃ©cor.