No more cold feet! These Hot Feet polar fleece slippers are filled with heat retaining linseed. Microwave for 90 seconds and keep your feet warm for hours! Also contains lavender, which exudes a relaxing fragrance to stimulate the senses. Designed to stimulate blood circulation which helps you relax. Not suitable for diabetics. Available in 2 sizes: M (UK 3-5) and L (UK 6-10). The sizing of these slippers is generous.