Eye chart turned sight gag...3-D glasses included! The 3-D effect is achieved through anaglyph printing—cyan and red screen-printing inks that correspond with the glasses provided. 17" × 17"; cyan, red & black ink. 100% cotton. Screen printed by hand with water-based inks. Polyfill insert. Hidden zipper. Machine wash cold with mild detergent, tumble dry low, iron on high heat. Expect 5% shrinkage.