Color and Size - 4PCS Black, 4PCS Blue. Made of high quality cotton/polyester material, breathable and comfortable to wear, won't hurt your skin. Cut: 7.0*6.5cm/2.75*2.56in. Winding hazard, adult supervision required. .3D profile shape - The blindfold is designed to hug the eyes and nose while allowing natural eye movements without any pressure on the eyelids and eyeballs. .Adjustable Strap - A durable elastic strap wraps your head tightly, preventing it from slipping without tangling your hair. Elastic closures at both ends allow the strap to fit different head sizes for people of all ages and genders. .Comfortable and stylish - The blindfold is soft, durable, stylish and comfortable. It's not flat, which helps not put pressure on the eye. Very comfortable and elastic, it is easy to put on / take off. Specially designed for left eye and left eye free eyes. .Wide Usage - Can be applied to protect your eyes, train amblyopia, lazy eye and nearsightedness so that vision can develop properly. Also a good eye mask for Halloween dress up party, masquerade etc. .