2s FAST HEATING SAFETY - The 2-Pack hand warmer eliminates the need to cool your hands, the three-speed adjustable hand warmer can quickly heat up to 131?, providing up to 15 hours of heat, especially suitable for the hyperthermia needs of patients with Raynaud's arthritis. 2 PACK (2-IN-1) IS MORE PORTABLE - Upgraded 2-Pack hand warmers rechargeable. The handwarmers has a snap that can be used alone as two or combined into one. It can be separated into the brim of the hat to warm the ears, in the two pockets of the coat, in the gloves, etc. 24-HOUR CONTINUOUS USE - The upgraded portable hand warmer can be divided into two or combined into one, and the flat hand warmers can be separated into hats, gloves, clothes, stockings, etc. The two can be used alternately to bring warmth throughout the day. COMFORTABLE DESIGN: Stylish pocket hands heater, easy to hold, warm and smooth, portable and compact, palm size, lightweight, you can take it with you when you work, walk the dog, travel camping, watching ball games, hunting in winter outdoor sports, that's the warmth it gives. Buy with confidence. Check out our reviews. Also, happy to combine shipping to save you when you buy multiple items.