Cotton Imported 100% Cotton for Softness & Durability: Made from premium 100% cotton percale, this fitted nap/rest mat sheet provides a soft, breathable surface for young children during nap time. Ideal for daycare, preschool, and kindergarten use. Perfect Fit for Standard Nap/Rest Mats: Measuring 24" x 48" x 4", this sheet is designed to fit folding nap/rest mats up to 2" thick. Pre-washed to reduce shrinkage and ensure a consistent fit after washing. Secure, Comfortable Fit with Elastic Corners: Features four durable elastic corners that easily stretch over nap/rest mats, holding the sheet securely in place. Provides a snug fit and added comfort to help children rest better. Easy Care for Busy Parents & Caregivers: Machine washable and dryer-friendly for hassle-free cleaning. Tumble dry on low for best results and long-lasting softness. Enhances Comfort & Cleanliness at Nap Time: Add an extra layer of coziness to any nap/rest mat while helping maintain a clean and hygienic nap environment. A great addition to any daycare or classroom setting.