Inside top piece comes off. See pics for reference.

The 1970 JON-E Hand Silver Warmer is a collectible piece from Aladdin Manufacturing Company, known for its high-quality craftsmanship and unique design. This catalytic hand warmer is made of metal and features a sleek silver color, standing at 3 inches tall and 2 inches wide. Its reusable feature makes it a convenient and practical addition to hunting accessories, providing warmth during outdoor activities. A must-have for sporting goods enthusiasts and collectors alike, this Jon-E hand warmer is a timeless piece that exudes nostalgia and functionality.