Nature's Approach Booties are the perfect remedy for foot aches and pains. Just heat these slippers in the microwave and slip them on your feet for instant relaxation and warmth. We know you will love them! Cotton fill and soft fleece liner One size fits most. Use our Herbal Slippers to help 'warm up' during the cold winter months or to help with circulation problems that leave you with perpetually cold feet. Herbal Slippers can also relieve symptoms of arthritis, joint stiffness and other types of inflammation. Each slipper has a removable outer shell for easy cleaning. Nature's Approach products are made from 100% natural grains and an assortment of 12 different natural herbs. These herbs provide a soothing scent that you will enjoy for years! Aromatherapy Herbal Pack Filling Includes 100% Nature's Finest Herbs: •Lavender •Peppermint •Spearmint •Valerian Root •Cinnamon •Chamomile •Clove •White Willow •Yarrow •Yellow Dock Root •Lemongrass •Flax Seed (provides moist heat therapy).