The Moose Fair Isle Sleep Mask is a great add on to our most popular family matching pajama design. Each mask is made of 100% cotton with a one-size elastic band that holds the mask snugly in place. Care Instructions: Wash warm Tumble drya 100% Cottona Two Cotton Layers with Soft Padding Interiora Stretchy Elastic Band Fits Most Head Sizesa Contrasting Trim around Edgea Preshrunk