***** **********Best Quality Guranteed. *****Light Seal Foam 250 X 125 X 2.5 mm( 9.84 X 4.92 X 0.09 in). Light Seal Foam is also called a Light Seal and it is located inside the back cover of camera. *****It is to prevent from light leaks. *****Japanese manufactures have used this materials for anti-reflection long time. Therefore, this is best anti-reflection materials for cameras and Binoculars. *****We attached the high quality double-face adhesive tape (made in Japan) on this so, you don't need to use any bonds. *****Made in Japan