E-Cloth High Performance Dusting Cloth is a reusable yellow polyester cloth that features extra long fibers to effectively trap dust and dirt, preventing them from being shaken out. Its natural positive static charge attracts dust, pollen, and allergens, locking them into the super-soft fibers. When used damp, the cloth's long fibers remove grease, grime, and over 99% of bacteria, using just water. This cloth is not only efficient but also eco-friendly, guaranteed to perform for 3 years or 300 washes.