The mummy wrap is a yesotherapy wrap that involves casting a part of the body to sculpt it. Casts are made of natural fibers that contain skin nourishing compounds like salts, algae, and other extracts. The fibers bind specific areas- most commonly abs, arms, and thighs - to provide compression and generate heat. The heat helps skin to absorb both the nutrients infused in the cast fibers as well as a nutritive cream that is applied to encourage increased fat metabolism.