TOASTY TOES: Crafted with super soft teddy boucle, the foot warmer heats up in just a few minutes to keep your feet snuggly and warm and soothes aches and pains in tired feet. Fits up to a standard UK size 10. PERFECTLY PORTABLE: Simply plug into a USB power bank (not included) with no need for a mains plug, for ultimate convenience. Use in the home, whilst camping or traveling. The handy built in pocket is perfect for storing the wire and power bank. ENERGY SAVING: Cold feet can make the rest of you feel cold too. Heat yourself, not your home to stay cosy and warm for less. 3 HEAT SETTINGS: Featuring 3 heat settings so that you can control your comfort and choose the warmth that suits you best. RELAX SAFELY: Featuring Heatsafe overheat protection and auto shut off after 2 hours for safety and for total peace of mind. As with all heated electrical products, we recommend they are switched off before you go to sleep & constant use at highest temperature is avoided. MACHINE WASHABLE: Fully machine washable to keep your foot warmer feeling fresh and hygienic. 3 year manufacturer’s guarantee.