Innovative top flat sheet and comforter have ELASTIC bottoms/corners to keep them in place The 4-piece reversible boy toddler bedding set includes: reversible toddler comforter w/ ELASTIC bottom, flat top sheet w/ ELASTIC bottom, fitted bottom sheet and standard size pillowcase Fits a standard size US crib/toddler mattress 27" x 52" | Quilt: 51.5" L x 27"W | Pillowcase: 27.5"L x 18.3"H Comforter material: 100% polyester, 100% polyester fill | Sheet/pillowcase material: 80% polyester 20% cotton Machine wash cold, gentle cycle | Use only non-chlorine bleach when needed | Tumble dry low heat | Iron on low heat when needed