The Tree Tops Polka Dot Fitted Sheet has a fun allover print featuring colorful polka dots in brown, green, blue, and turquoise. It is designed to fit a standard size 28 inch x 52 inch crib mattress. It has elastic all around for a secure fit. It is made of 100% cotton. Care instructions: machine wash cold in gentle cycle with like colors, do NOT bleach, tumble dry low, iron on lowest setting as needed.