The Opticoaster is designed to be accessible for people with varying degrees of vision impairment. It uses both visual and tactile features to help users place their cup securely.
Visually, the coaster has a bright yellow base for easy identification, a high contrast black plate to distinguish the cup placement area, and even a glow-in-the-dark ring for low-light situations.
Tactile features include inward-facing arrows to locate the center of the coaster, a sloped lip to guide the cup placement, and rubber non-slip feet to keep everything secure.
While the exact size isn’t mentioned for compatible cups, the overall width is 5 inches and the maximum cup diameter it can accommodate is 3.7 inches.
