- Made of all Natural material, ramie is a natural fiber, a traditional material rough enough to clean and exfoliate the skin yet delicate enough to keep your skin sparkling. The cotton drawstring allows you to hang the soap sponge in your shower or bathtub tap to dry and keep your soap close at hand for your next bath! I know you’re tired of your soap getting stuck to tub! Just soak in water before using; Don't share the soap bag with others, and it's best to change it every 4 weeks, just like a towel!