When the temps drop, keep the heat in your hands with the Clam Rechargeable Hand Warmer. Featuring four heat settings and up to 18 hours of warmth, this slim, heavy-duty warmer slips easily into your pocket and doubles as a power bank to charge your phone or other devices. With waterproof construction, a built-in flashlight, and quick recharge capability, it’s ready for your coldest days on the ice.