Support your posture through long hours at your desk with the HoMedics Back Cushion. Activated by a button, the ergonomic pillow offers a removable heat cover that emanates gradual warmth over a two-hour period to soothe and loosen stiff muscles. Offering adjustable height settings for optimal comfort, the cushion straps onto your chair’s backrest with ease, while its spring-loaded torsional design helps reduce pressure on the lumbar and thoracic areas of the spine. Features: Designed to improve posture 5 levels of height adjustment Removeable heat cover – reaches 42°C in just 15 minutes Gradual warmth lasting up to two hours Elasticated straps USB rechargeable / power bank included