American Flag Retroflective 2XL Extra Large 3M Decal 5" x 8 3/4" Scotchlite Reflective Material by 3M Retroflection is the brilliant flashback when light strikes the tiny reflectors. Contains over 45,000 micro reflectors in each square inch (6 cm2) of material. Attach to any firm, non-porous surface such as SUVs, autos, boats, and windows. Size: 2XL Extra Large measures 5 x 8 3/4 inches.