Gray and Yellow Zig Zag Crib Rail Cover | Carousel Designs. A perfect solution to help protect your baby's crib while maintaining a stylish decor for your nursery. Our Crib Rail Cover is reversible, enabling you to change the visible side at a moment's notice. Simply wrap the cover around your crib rail, pull the ties though the buttonhole and tie. The crib rail cover measures approximately 50" long by 18" wide.