One side is made of a warming fabric, such as polyester, with a bird's-eye weave and a large hole design, which wicks away moisture and is suitable for use in winter or cooler environments. The other side is made of a cool material, such as milk silk, which has a smooth touch and provides a cooling sensation to the eyes in summer or hot environments. It comes with soft silicone adjustable ear clips and a high-elasticity elastic band, which can be adjusted to different head circumferences for a comfortable fit without pinching the ears.After folding the eye mask, put it directly into a transparent plastic bag or a plastic bag printed with brand information. The bag opening can be self-sealing or simply heat-sealed. It is light and low-cost, suitable for bulk transportation.