The Gaiam Balance Disc is a comfortable, air-filled cushion that can double as a seat outdoors, on hard floors, and during meditation. Gaiam reports that spending even an hour or two a day on this wobble cushion can greatly improve both belly and low back strength. Sitting on a chair topped with the half-domed Gaiam Balance Disc adds instability and subtle movement to an otherwise static position, which is perfect for anyone looking to improve their posture in 2020. This accessory is great for core strength and balance exercises outside of your chair, making it a versatile option for those with lofty fitness goals. Unlike the Vibration Plate Jiggle Fitness Machine, the Gaiam Balance Disc is an affordable option for those who struggle to keep their New Year's resolutions past the Super Bowl. It's a great mate for anyone looking to ease into the fitness process gently. Time to start sweatin' your New Year's resolutions with the Gaiam Balance Disc.