Autistic Child Emergency Warning DECAL / Sticker. 4.25 x 4.25 inches. Adhesive-Backed Autistic Child Emergency Warning DECAL. Waterproof High Quality 4 Mil Vinyl Decal Sticker. Measures: 4.25 x 4.25 inches. Mounts very easily with self adhesive backing. Unique design! Made in the USA.