Warm Waist Cushion SB-KC40 Sugiyama Textile Electric Cushion Hot Cushion Hot Floor Chair Hot Chair Size: Main body: Approximately 38 x 75cm, Cover: Approximately 40 x 40 x 40cm Color: Brown Material: 100% Polyester Made in Japan Recommended for office chairs. The fluffy fabric helps it warm up quickly. On days that aren't too cold, it's warm even without turning on the power, thanks to the fabric. The fabric on the sides of the waist, which looks somewhat flimsy, subtly blocks out the cold air. The timer function can be set to 2, 4, or 6 hours, and it's designed to automatically turn off even if you forget to do so. The temperature adjustment is a stepless slide type. Even the lowest setting gets quite warm, so "medium" is usually sufficient.