These 100% microfiber pouches are made with high-density microfiber materials designed to protect your cell phone display and clean dirt, dust, and oily smudges from sensitive surfaces like sunglass, eyeglass and camera lenses, cell phone, MP3 and PDA panels as well as laptop and computer screens without scratching. They include an adjustable plastic ball closure for cinching the pouch closed to ensure safekeeping of the contents.