? Why Choose Boniesun? ?We promise will try our best to solve your issues if you're not satisfied. Please feel free to contact us, we will reply within 24 hours. ?Washing Tips?You can wash the mask regularly as needed to maintain eye hygiene. We strongly recommend that you: Hand wash with water <40°C, then air dry, do not rub vigorously, do not wash with strong detergents. The Boniesun series all use ROHS certified environmentally friendly Lycra fabrics, which are comfortable and smooth, safe and non-toxic. ?Ultra Thin 3D Design?The thinnest 3D eye mask to date, the ultra-thin design brings a lighter experience, combined with the Boniesun contour cup structure to release the eye space, away from eye makeup touch, and fully make your eyes and face freely!. ?Flexible Adjustable Elastic Strap?With the flexible sliding buckle, the thin and elastic headband can be adjusted to the most suitable position for the head circumference, reducing the pressure on the back of the head and fix the eye mask on the face, allowing you to sleep in peace all night. ?Comfortable Facial Feeling?Scientific selection of materials, soft and elastic memory foam lining with skin-friendly and breathable double-sided lycra fabric, bring soft and relaxing comfortable experience to eyes. ?Exclusive Patent For Side Sleepers?The ultra-thin design of both sides that touch the face can relieve the side face pressure caused by side sleep to the greatest extent, reduces the excess light caused by side squeezing and deformation, improves the sleep quality, and makes you energetic all day. ?Totally Block Out?Soft W-wing padding wraps fully fills the gap between the nose bridge and the eye mask and effectively blocks the outside light, quickly bring you into a dark sleep environment and start a sweet sleep journey.