Features: Comfortable Fit Planumberebog: Produced from excellent cotton, soft and ventilated, reducing pressure from screen wear. Broad Agreement: Global size plan accommodates various trademarks and models of sleep apnoea care disguises. Direct current install lacking adjustments, offering a accessible replacement answer for frequent device changers. Germicidal Security Layerebog: Organic cotton fibers provide excellent germicidal characteristics, reducing microbial growth and enhancing sanitation criteria.. Face covering Sustainablemail: Produced from renewable cotton, supporting environmental security by reducing expendable products. Easy Cleansing and Maintenancemail: Permanent cotton structure backs both hand and machine washing, maintaining sanitation for extended use. Specifications: Substancemail: Cotton, soft and comfortable, gentle and ventilated, reducing skin irritation. Sizemail: See Size Chart Selling characteristicsecond: blue, white, gray Package Includes: Ventilator mask × 4 note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution