Heat Pro Hand Warmers provide portable, air-activated warmth for cold weather activities. This 40-pair box is perfect for skiing, outdoor concerts, sporting events, or shoveling your driveway. Each warmer activates as soon as you open the package and reaches maximum heat within 20 minutes when placed in an enclosed area like a jacket pocket or gloves.

The warmers deliver an average activated temperature of 57°C (135°F) with peak temperatures up to 74°C (165°F) under normal use, providing up to 8 hours of continuous heat. The warming technology uses all-natural ingredients that create heat through oxidization. After use, warmers can be disposed of with regular household garbage as they are not recyclable or compostable.

For safe use, keep a layer of fabric between the warmer and bare skin. Supervision is recommended for use by the elderly, children, and people with sensitive skin. People with diabetes, frostbite, or circulatory problems should consult a physician before use. Contains iron powder which can be harmful if swallowed.