This is something I used with the Nekalasa automatic cat litter box. I purchased it on Amazon. It is not an official Nekalasa product and is slightly smaller. The one with the measured size is a different, opened item. The item being shipped is unopened. A semi-transparent, expandable bottom plastic bag approximately 50cm x 30cm x 10cm. - Size: 50 x 30 x 10 - Color: Semi-transparent to white - Shape: Expandable bottom type Thank you for looking. Note: We have cats in our home. Please refrain from purchasing if you are concerned.