REDUCE READING STRESS - The color overlays for dyslexia provide a clearer field of vision, make letters and words easier to see, reduce visual stress and eye fatigue, improve concentration, and make reading faster and more comfortable. 12 PIECES DYSLEXIA OVERLAYS IN 6 COLORS - This package contains 6 colors: red, blue, yellow, green, orange, and red, with two pieces per color. Easily determine which color works best for you. Overlays can be used individually or layered to find the optimal combination. WIDE APPLICATIONS - Transparent plastic sheets are suitable for use in lighting, color correction, color transmission, mixing, absorption, and filtering across different wavelengths of light. VARIABLE SIZE - Full-size overlays measure 29.7 x 21 cm, making them suitable for various texts, documents, books, and screens used in educational, home, or work environments. Can be trimmed to smaller sizes for customized use. IDEAL FOR EDUCATIONAL USE - Color overlays help individuals who experience reading difficulties by improving focus on text and enhancing reading comfort. Suitable for all ages. Color: Red, Orange, Yellow, Green, Blue, Red Material: PVC Size: 29.7 x 21 cm Package Contents: 12 x Reading Overlays Note: Slight color variations may occur due to lighting and screen settings. Measurement error allowed is +/- 1-3 cm.