Enhanced Breathability & Comfort: Adds a breathable layer to any crib mattress with two layers of soft, quilted mesh, promoting better airflow and a cozy sleep environment for your baby. Superior Waterproof Protection: Features a waterproof lining to shield crib and toddler bed mattresses from spills, leaks, and accidents, ensuring lasting cleanliness and hygiene. Easy to Use & Change: Designed with stretchy elastic sides for a snug fit and hassle-free changes, making it convenient for busy parents. Universal Fit for Standard Crib & Toddler Beds: Measures 28” x 52.5” (71 cm x 133 cm) to fit securely on most standard crib and toddler mattresses. Durable & Easy Care Fabric: Crafted with 100% polyester sleep surface and stretchy polyester-spandex sides. Machine washable and dryer-friendly for effortless maintenance.