Cotton SOFT AND COMFORTABLE - lulujo fitted crib sheets are made of 100% muslin cotton, super soft, comfortable, and won't irritate your baby's delicate skin. Lightweight, breathable muslin crib sheets stay cool even in warm weather. SNUG FIT - 360° elastic band and 9" deep pockets ensure the muslin crib sheets fit snugly on your crib mattress. EASY CARE - This crib sheet is machine washable and tumbles dry at low temperatures. Muslin baby sheets are softer and more comfortable after each wash. STANDARD SIZE - The baby crib sheets measure approximately 28" x 52" x 9" and fits most standard crib mattresses and toddler bed mattresses. DECORATING THE NURSERY - When you are preparing your nursery, quality bedding is essential. Our muslin crib sheets are come in beautiful neutral designs that easily mix and match today's nursery colors.