The Powakaddy Winter Therma Mitts. A brilliant accessory and a something thats new for your FW series FX series, CT or C8 trolley. So whether you have a compact trolley or and FW or FX trolley then this will fit. Brilliant for the winter months and the colder days over the season. Its an accessory that is vital if you play winter golf and play your best whether left or right handed.