Knitted pattern: Like our new cuddle cloth, our foot warmer also has a knitted pattern surface. Inside is the fluffy, soft lining that relaxes your feet and keeps them warm in the cold seasons 3 Temperature Levels: The foot warmer operates at 3 freely adjustable temperature levels and features an extra soft, breathable core that meets all needs Washable: The inner lining of the FW 150 foot warmer can also be easily removed and washed in the washing machine at a maximum temperature of 30°C Automatic shutdown: The foot warmer is equipped with a practical control element and an automatic shutdown after 90 minutes. Overheating protection completes the functions Up to shoe size 46: The FW 150 foot warmer is very spacious and is therefore suitable for all feet up to shoe size 46