PREMIUM KNIT FABRIC - Our crib sheets are made from premium knit fabric which feels very soft to the touch and holds up well over many uses. Both lightweight and breathable, the knit fabric promotes a cool and comfortable night’s sleep. Wash before use to ensure the best fit and softness for baby. HIGH QUALITY AND TRENDY DESIGNS - At Copper Pearl we pride ourselves on making only high quality products that always look great on babies, moms, or in your nursery. Our crib sheet designs are simple, modern, and complement any theme in your baby’s room. Our knit fabric also matches our other products for perfect nursery coordination! GREAT FIT FOR ALL STANDARD BABY MATTRESSES - Our cover has been perfectly designed to fit all standard baby mattresses. High quality elastic stitching around the entire crib sheet ensures a tight fit that looks clean and modern. The perfect fit keeps baby safe and comfortable.