The Fellowes Tilt 'n Slide Pro Keyboard Manager features the Comfort Glide System - mouse tray slides over numeric key pad. Attaches to desktop edge without tools, which allows platform to tilt or slide with ease. Extended knee clearance keeps you comfortable while typing and mousing. Single lever easily adjusts tilt (flat to 30 ) and slide (4-5/8" travel distance). Unique textured surface keeps mouse from sliding off mousing platform.(IP pending). Ultra soft memory foam wrist support with Microban antimicrobial protection keeps product cleaner.