These 3D Glasses are made of cardboard with PET red and cyan glasses and measures 5 1/2 inches*1 1/2 inches.They help you enjoy any 3D films.Perfect for cinema, studio, home and many other occasions. Due to the compact and lightweight design,they fit into your pockets and bags easily. Custom size,shape and color are available.Customize with your company emblem, logo or market message to advertise your brand in a stylish way!