Holaoso light blocking sleep mask - Effectively blocks light: premium fabric with an adaptive nose-bridge fit blends with most nose shapes. The ergonomic 3D contour follows facial curves to ensure complete light blockage. - Pressure-free eye cups: deep 14mm contoured eye cups create space for blinking without pressing on the eyes. Designed for both men and women to help improve sleep quality. - Comfortable for side sleepers: ultra-thin edge design provides maximum comfort for side, back and stomach sleeping, reducing pressure on your temples. - Breathable and soft: slow rebound memory foam with an air hole design allows the skin to breathe. Cool, smooth fabric keeps you feeling refreshed and not stuffy. - Adjustable and versatile fit: strap buckles adjust from 20 to 26 inches for a snug fit on most head sizes. Easy to position the mask for optimal coverage and comfort. - Materials and performance: memory foam core with air holes for breathability; premium fabric on the exterior delivers a soft, cooling touch while maintaining durability and shape. - Use scenarios: - Long flights and travel: blocks cabin light and helps you rest during red-eye trips. - Daytime naps and night shifts: creates a consistent dark environment for better sleep quality. - Home and hotel use: suitable for bedrooms with ambient light or street light, ensuring peaceful downtime anywhere. - Compatibility and care: designed to fit a wide range of head sizes and sleeping styles; wipe clean or hand wash as recommended to maintain fit and comfort.