Feature:just need water will remove permanent and stubborn stain;eco-friendly new light material ;great helper for your household cleaning, really magic sponge! colorful for your cleaning works! Commendatory uses: Glasses, mirrors (uncoated), ceramics, enamel, stainless steel, and non-glossy plastics, office equipment(except screen) etc Non-commendatory uses: Resin type products, coated surfaces, car exteriors, woods, lacquer wares, absorbent surfaces, glossy plastics, screen etc. Size:10.8*6.8*2.9cm Density:about 9 kgs/cbm Package:1p / polybag or as per customer's request Color:pink, yellow, blue etc.