Proven to reduce visual stress problems that often occur alongside dyslexia, this 10 pack of Tinted A4 Page Overlays are available in a variety of colours to help find the right one for you.Use for exam papers, invoices, instructions and more, these A4 page overlays help to reduce perceptual distortions of text, without interfering with its clarity.With a choice to use either the matt or gloss side, these overlays are very simple to use, after removing the protective film, just place over text and read.. Improves focus. Aids in relieving visual stress. A4 size . Pack of 10 assorted mix of colours. Approximate dimensions (mm) H 297 W 216 D 4