This product is made of neoprene and terylene and features a lower back support and abdominal lift. It can effectively tone and shape the waistline when worn during physical activity. The neoprene material produces consistent heat for the lower back and abdominal muscles. To clean, hand wash in warm water with mild soap and rinse thoroughly. It is recommended to air dry. Individuals with a known susceptibility to dermatitis or allergies to neoprene by-products should not wear this neoprene support. It is also not recommended for those with eczema or skin trauma. If any abnormalities occur, discontinue use immediately and consult a doctor. The size of the waist trimmer is 10 inches wide and 37.5 inches long.