You can never have too many sheets!  The three-piece toddler sheet set includes a flat sheet, fitted sheet and pillowcase.

Crown Crafts Everything for Kids Toddler Sheet Set:
Includes: flat sheet, fitted sheet and pillowcase
Flat sheet dimensions: 45" x 60"
Fitted sheet dimensions: 28" x 52"
Standard pillowcase dimensions: 20" x 30"
Soft 100 percent polyester microfiber fabrics
Machine wash cold, gentle cycle;  tumble dry on low heat