The perfect combination of a exercise ball and ergonomic chair, Luno is an active sitting solution for the office, the living room, the classroom, or even on the go. Instead of slouching in a chair, this sitting ball activates your back and core support muscles which promotes strength, good posture, and can even help relieve back pain. Experience the freedom to wiggle, bounce, and shift all day long for happy joints and muscles! Luno's patented design supports up to 400 pounds, and is designed to stand up and sit still on its own, so it won't roll away from you. Luno stays round, doesn’t deform under weight, and has just enough give for exceptional comfort. It even has a built-in handle so you can easily take it with you. With the Luno, you can finally say goodbye to garish electric blue rubber balls for good. Think of Luno as one of those normal yoga balls in a fine dress or a tailored suit. Thanks to its soft, elegantly stitched, and universally colored felt cover, Luno embodies the best of aesthetic design and functionality.