Innovative LiveBack technology – Leap was the first chair to feature Live Back, with upper and lower backrest parts that move independently to support your spine in all postures throughout the day Dynamic, ergonomic seat design – the seat glides back and forth as the user reclines – keeping the user's posture in check and helps moving closer to the worksurface; flexible seat edge reduces pressure behind your legs for added comfort Accessible braille-labeled levers – adjustment controls include braille labels for enhanced usability and inclusivity Premium sustainable fabric – Fame fabric (95% Wool, 5% Polyamide) is OEKO-TEX and EU Ecolabel certified, with high abrasion resistance (120,000 Martindale cycles) Ready to use and durable – fully assembled; 12-year manufacturer warranty; wheels suitable for hard or soft floors; made in France with expert craftsmanship