Cozy Crest Rechargeable Electric Hand Warmer - Pocket-Size USB Hand Heater for Winter Walks, Commuting & Outdoor Sports

Cold hands are a small problem that ruins a whole morning. This is a pocket-sized answer: press the button, slip it into a glove or a coat pocket, and it puts steady warmth exactly where you need it — for the walk, the platform, or the touchline.

Double-sided heating is the detail that matters. Cheaper warmers heat one face and leave the other cold, so you end up turning it over constantly. This one warms both surfaces, so it works cupped in one hand or held between two. The magnetic halves are the second good idea: split it in two and warm both hands at once, or click it back together for a single larger heat source. It charges over USB rather than eating disposable fuel or lighter cells, which makes it cheap to run.

Because this is a lithium-battery device that sits against the body, treat it like one. Do not hold it against bare skin for long periods and do not use it while asleep — prolonged contact with a warm surface can cause a low-temperature burn well below the point where it feels uncomfortable. Charge it while you are awake and in the room rather than unattended overnight, using the supplied cable. Stop using it and dispose of it properly if the casing swells, deforms, or develops a hot spot. Keep it away from young children, and from anyone with reduced sensation in their hands.

• Double-sided heating; magnetic halves split into two warmers
• USB rechargeable — no disposable fuel or lighter cells
• Pocket sized for a coat pocket or glove
• Use over clothing or in a pocket, not against bare skin for long periods
• Not for use while asleep; keep away from young children
• Lithium battery: charge attended, and stop using if the casing swells