These sheets are naturally hypoallergenic and free from harsh chemicals, bleach, and dyes, making them perfect for sensitive skin. As the only Tencel sheets certified by the National Allergy and Asthma Foundation, they also meet the most stringent safety and environmental standards of Oeko-Tex Class 1, ensuring they’re safe even for babies and those with respiratory sensitivities. The eucalyptus fibers naturally resist allergens, helping to create a cleaner and healthier sleeping environment.