1. 30 LITTER TRAY LINERS: Package includes 3 rolls of cat litter tray liners, each roll has 10 pieces cat litter tray liners, totally counting 30 pieces, enough quantities for daily needs and replacements. 2. SUITABLE SIZE: The cat litter tray liner measures about 70cm x 45cm (27.6in x 17.7in), fits for cat litter tray with perimeter up to 183cm (72inch), suitable for "MEDIUM" sized Cat Litter Trays (42cm X 31cm X 10cm) and can also be used for smaller trays as well. 3. STRONG AND DURABLE: These cat litter tray bags are made of HDPE material with strong toughness. They are scratch resistant, tear resistant, not easy to rip, can withstand cat claws scratches and bear heavy cat litter loading. 4. CONVENIENT TO USE: With the strong drawstrings, these cat litter tray liners are easy to use. Just place the liner on the tray and pour the cat litter on the liners. Once used, just pull the drawstrings, tie it up and toss it away. 5. NO MESS ANYMORE: Our leak-proof cat litter tray liners can prevent the unpleasant odor from pet urine or faeces, and stop the used cat litter sticking on the cat litter tray. With these liners bags, you can clean the cat litter tray easily and quickly, leaving no mess anymore.