This adjustable left eye mask is made of 100% polyester, lightweight at only 16g, and is easy to wear. The circumference of the adjustment rope is 24-70cm, suitable for children to adults, and fixed firmly without slipping. The 9×7cm eye mask body is equipped with a thickened nose bridge design, 360° full light blocking, suitable for amblyopia training, postoperative recovery or nighttime sleep. 2 bags are individually packaged, durable and easy to clean, and are your intimate assistant for health management!