The StayPut™ Safety Crib Sheet Like its name, a StayPut™, "stays put" on the mattress, eliminating all the risks associated with a crib sheet (see our Crib Sheet Danger Check List). It cannot come off by itself or be pulled off a mattress. StayPut™ protects your precious baby from any risks of suffocation/strangulation. StayPut™ is uniquely designed to slip on the mattress easily like a pillowcase. The StayPut™ Safety crib sheet completely encases the mattress with an added security flap that fastens underneath the mattress. Its design also eliminates all shrinkage hazards. StayPut™ makes it possible for babies, when unattended, to be able to sleep as safely as in a mother's arms... and for parents to sleep soundly knowing their babies are sleeping safely. Ordering Information StayPut Safety Crib Sheets are recommended for standard size 28 " x 52" mattresses with a depth of 5"-6". They are available in 5 popular colors: White, Yellow, Pink, Blue, & Denim Blue. You can order directly from our Web site using our Secure Online Order Form or by calling us at (781) 551-9836. NOW AVAILABLE: 100% Cotton Flannel in White or Beige! The colors coordinate with most print bumper and bedding sets, including those manufactured by Kids Line, Lambs & Ivy, Red Calliope, Judi's Originals, Dundee, Little Bedding, Glenna Jean, No Jo, Springs and other brands found in stores and catalogs. Washing Instructions The soft 50% Cotton 50% Polyester fabric, and the 100% cotton fabric are both machine washable in warm water, tumble dry medium heat. Please close flap when washing to prevent tangling.