Engineered for Comfort: The Hyper-Wool Crib Sheet combines 50% Polyester, 45% Viscose, and 5% Wool, providing warmth without the itch. It creates a cozy, dry sleep environment for your baby, ensuring they stay comfortable throughout the night Classic Softness, Cozy Feel: Designed to offer the best of wool without the drawbacks, our Hyper-Wool Crib Sheets are soft, cozy, and itch-free, providing a luxurious sleep experience for your baby without the bulkiness of traditional wool Breathable Sheets for Better Sleep: Enhanced for optimal airflow and breathability, these Hyper-Wool Sheets are Airflow Certified, promoting deeper sleep for your baby by ensuring they stay at a comfortable temperature all night Secure Fit That Won’t Slip: Featuring Powerband technology, the fitted crib sheet has a fully banded elastic that securely grips onto your mattress, preventing the sheet from shifting or slipping, ensuring a snug fit for uninterrupted sleep Machine Washable for Convenience: Our Hyper-Wool Crib Sheet is machine washable, making clean-up easy. Simply wash on a gentle cycle and tumble dry on low to maintain its softness, warmth, and breathability after every wash The benefits of wool without the itch, for the softest, coziest sleep. Our Hyper-Wool crib sheets are enhanced for softness and breathability, so baby stays warm without overheating.