Facts are facts - we sleep better when it's dark. The top side of this mask is very soft red and black buffalo plaid fleece, the back side is you choice of either the same red/black fleece or a dark gray cotton knit, similar to the fabric of a t-shirt. The gray knit fabric is soft and cooler on the face than fleece, but either side would feel nice on the face. Inside is a layer of light-blocking fabric, the wide elastic band is black, shiny on one side. Pattern placement will vary. Average adult size: Mask is about 8 inches wide by 3 inches from center. Elastic is about 12.5 inches, sized for an average adult/teen head of about 21-23 inches. Large adult size: Mask is about 8 inches wide by 3 inches from center. Elastic is about 13.5 inches, sized for a larger head of about 22-24 inches.Soft and comfy, carefully handmade in the USA.