1.Reusable Carbon Rod Technology: The Pocket Hand Warmers use advanced carbon rod technology for consistent and longlasting heat. Simply charge and reuse, making it a option that provides warmth time and again, perfect for home, outdoor and travel use 2.COMPACT PORTABLE DESIGN and compact, this hand warmer easily fits in pockets, bags or gloves. Ideal for outdoor activities such as fishing, hiking or skiing, it is warm in cold weather without wearing 3.Zinc Alloy Construction: Made with a sturdy zinc alloy shell, these hand warmers are built to last and can withstand the rigors of outdoor use. Their construction ensures they perform reliably even in harsh environments 4.Quick and Efficient Heating: Featuring fast heatup times, these pocket warmers provide immediate comfort when you need it most. Whether you're at a chilly sporting event, enjoying outdoor adventures, or traveling, they quick relief from the cold