IT MAY REDUCE THE WATER PIPE TO STUCK AND AVOID THE ODOR FLAVOR EFFECT THE HOME ENVIRONMENTAL POLLUTION. IT ALSO CAN PREVENT THE RESIDUAL FOOD FALL INTO THE WATER PIPE BEFORE YOU WASH DISHES, NO TROUBLE CAUSED. WE HAVE 3 TYPES OF MATERIALS, PE AND NON WOVEN AND .THE SIZE :18X25CM, 28X25CM, 24.5X26CM, 31X28CM, 23.5X25.5CM, 32X26.5CM, 16X15CM,20X20CM, 16X23.5CM,12X23CM, 12X14CM