Fbee Rechargeable Hand Warmers 2 Pack, Ultra Thin for Gloves, Women's Gifts 3 Heat Levels(38℃-52℃), SafeWarm Temp Control, Up to 7Hx2 Warmth, Portable Reusable USB Heater, Stocking Stuffers

2-SECOND INSTANT HEAT WITH 3 HEAT LEVELS – Heats up in about 2 seconds and offers 3 temperature levels from 38°C to 52°C. The 2-pack hand warmers gives you up to 7H x 2 of warmth in total ULTRA-THIN AND ULTRA-LIGHT – At just 61.4 g (2.17 oz) and 1.57 cm (0.62 in) thick, this hand warmer fits easily in a pocket, a palm, or inside a glove, so you hardly notice you are carrying it NTC CHIP OVERHEAT PROTECTION – A built-in NTC chip monitors temperature in real time, while SafeWarm technology automatically adjusts the heat setting and help prevent overheating during long use PORTABLE FINGER LOOP – The attached finger loop keeps the hand warmer firmly in your hand and lets you hang it on a bag, a belt loop, or a hook when not in use, helping prevent drops and loss when you are on the move 1-TO-2 USB-C CABLE AND BATTERY DISPLAY – Includes a 1-to-2 USB-C charging cable that charges both hand warmers at the same time. Double-click to check the remaining battery level at a glance