Dr. Scholls® Tired, Achy Feet Soothing & Reviving Foot Mask is a pair of self-heating single-use booties that gently warm to help ingredients like Epsom salt and menthol to deeply penetrate to the muscles of the foot. Specially formulated to provide fast and lasting relief, these masks help your feet feel relaxed and relieve everyday achiness - like taking a soothing bath. They are also infused with shea butter, lavender and peppermint essential oils to leave your feet feeling soft, moisturized and renewed.