A person wearing the forearm-warming device with a sensor measuring their hand temperature Ms. Mallory Roussel/USARIEM Public Affairs

Get cold hands, but hate wearing gloves? Then there might soon be a technology that can help you. The US Army is developing an arm heater that allows people to go glove-free in freezing conditions, helping them to carry out mechanical repairs or first aid.

Gloves can keep your hands at a comfortable temperature, but they often reduce dexterity. Take off your gloves, though, and numbing cold has an equally detrimental effect on your fine motor skills, as well as being extremely …