Made from wood and iron powder
Nontoxic, nonflammable
Temperature can reach over 60 degrees Celsius
Lasts over eight hours
Heats up quickly
Good for outdoor activities such as camping, hunting, fishing, skiing and skating in very cold weather
Stimulates blood circulation, relaxes muscles and joints, reduces swelling and eases pain
Effective for easing stomach aches, back and leg pain
Inner size: 90 x 55mm
Outer size: 120 x 80mm