This eye mask is made of polyester fiber, smooth to the touch, safe, washable, skin-friendly, good shade, and has excellent breathability. An eye mask can block light, improve sleep quality, and give you more energy to work and study. Elastic straps are designed to fit most people's sizes. The large size of the eye mask will not make your eyes feel tight. No matter when and where you are, it can bring you a good rest and help you refresh. If you need a custom pattern, please let us know and we will try our best to meet your requirements. The prices for 6500pcs or over are based on ocean shipments.