Large urine collector (3 liters). We designed this product after using the other smaller clear collectors that were on the market. We found that the existing ones were thin and sometimes had sharp edges that can be quite painful But worse, everything else LEAKED from the lid. If you accidentally tipped it over in the bedroom or in the car and don't catch it, you will end up with that terrible lingering urine smell. Ours has a special screw on lid that has a liner especially designed to keep the urine and the smells INSIDE until you empty it. Unlike the other products on the market this can be used again and again and is dishwasher safe.