The Motocaddy Hot Mitts are the ideal accessory for those prone to getting cold hands in the winter. Cold Hands when golfing is always the worst, it can ruin your round when you cannot grip the club properly of make you lose focus if they feel the biting winter wind too much. These Hot Mitts plug into your trolley & heat themselves up so you can always put your hands back into a set of hot gloves, that have a comfy fleece lining to make sure your hands stay warm for the whole round. They have 3 heat settings & fit onto any Motocaddy trolley handle & are compatible with the 28V M-Series Model that has a USB (Universal Serial Bus) port on it. Motocaddy's Power Bank is also compatible with the Mitts