CAETLE make up blending sponges provide the latest technology for flawless and great results when blending and applying your favorite foundation and concealer. They are made from organic compound Styrene and Butadiene rubber also known as SBR. This high quality ingredient is latex free and hypo allergenic so it is safe to use on all skin types. This technology also helps the sponge expand when wet for effortless application of your favorite product and easy clean up. A logo bag is included with each sponge for your convenience. These sponges are sure to become on your beauty must have list so go ahead try one or try them all.