made of vinyl plastic (formulated with non-migrating plasticizer)
not be less than 0.020 inches thick
The front sheet is clear with matt finish
Inside dimension is less than 2-5/16 inches wide by 3-3/8 +/- .06 inches long
The front and back sheet is sealed to each other along the two sides and the bottom using a suitable heat and pressure or high frequency electronic weld method. Seams are suitable width to preclude tearing during normal use
All corners have a rounded finish
The front sheet is thumb notched. The back sheet extends above the front sheet as shown in picture and contains a centered ¼ inch diameter reinforced hole
