Modern, Simple Designs – Designed with a wide range of modern colors, styles, and patterns, including gender neutral options, Mebie Baby Sheets are available in options for any baby crib or nursery decor. Soft Muslin Sheets – Made with 100% Muslin Cotton, these sheets are soft to the touch and breathable, made to keep baby sleeping comfortably. Standard Size – At 52" x 28", these sheets are made to fit standard baby bed crib mattresses and are easy and convenient to use and install. Durable Fabric – Made with premium muslin fabric, Mebie Baby sheets are durable and designed to last for many uses to come. Machine Washable – Premium sheets that are easy to wash, simply wash cold and tumble dry for refreshed sheets after messes from baby. Mebie baby muslin crib sheets. They fit the standard crib mattress size of 52" x 28". The fabric is soft and breathable. 100% muslin cotton. The designs are exclusive to Mebie Baby, and are modern, simple designs.