Relax pain away night or day. Reduce back pain, relieve muscle strain and irritation from an achy back with the comfortable heating/cooling power of the buckwheat back support. Hot or cold beads conform to the contour of your back while you sit for pain-free therapy. Heat in microwave in seconds or freeze. Polyester, 49 1/2 x 11 1/4 x 3/4".

Cools in freezer
Heats quickly in microwave
Wear over or under clothing
Cover a wide area of the back