Add a little extra comfort and protection to your kinder mat with this fun slip-on fish bubbles sheet these sheets are designed as a pillow case so it is easy to slip on and covers the entire mat. These slip-on cases are suitable for your yr. Daydreamer, basic 5/8", basic 1" or toddler kinder mat model kinder mats. The sewn-in flap in these pillowcases keeps your mat snug inside, and the machine-washable cotton flannel ensures that they are easy to clean.