This product is designed to be easy to use for children who have difficulty reading. It's hard to find and is even being resold at inflated prices. I hope it reaches those who truly need it. - Color: Navy - Product Name: Mojisashi - Features: Window that allows for smooth reading - Ease of Use: Dual-sided markings for easy measurement of height and depth - Size: 16cm ruler Thank you for looking. #Dyslexia #DL #LearningDisability #Reading