Comfortable Material: The fitness arm shapers are made of nylon and spandex， soft and elastic， comfortable to wear， suitable for different people， seamlessly fit under your clothes and make your arms look slimmer. very elastic， suitable for different types Suitable for: The arm warmers are suitable for women and girls who want to make their arms look slim. We recommend using them about 4 to 6 hours every day. Multipurpose: The slimming arm shaper can be used in sports such as running， swimming， yoga， basketball， baseball， volleyball， etc. to cause damage. Product DescriptionMaterial: Nylon