You might be a night Owl, but when it is time to sleep, get all the help you can with our comfy Owl Yours sleep masks! Each mask is made of 100% cotton and a one-size elastic band holds the mask snuggly in place.a 100% Cottona Two Cotton Layers with Soft Padding Interiora Stretchy Elastic Band Fits Most Head Sizesa Contrasting Trim around Edgea Preshrunk