PRODUCT PARAMETER PRODUCT NAME:Nanofiber glass cleaning cloth SIZE:12x16in WEIGHT:0.06 pounds COLOR:Green/Beige/Gray/Blue (four colors,random delivery) MATERIAL:Superfine fiber FEATURES:Strong decontamination effect/Easy to clean/Quick drying WASH & CARE: For long-lasting use, machine wash often to remove trapped dirt, dust, and grease. Launder separately with other microfiber articles on a warm water cycle. Tumble dry low. Avoid chlorine bleach, fabric softeners, and dryer sheets to maintain microfiber's advanced dirt-eating technology.