The 16" X 24" reusable training pad for Turf Dog Potty tray is sold separately so you can have extra towels when you need to wash the reusable pad that comes with the Turf Dog Potty tray set.
The 16" X 24" reusable training pad is made to soak animal urine. This pad fits between the Turf Dog Potty training tray and the turf mat, as the dog's urine is filtered through the turf mat, the reusable training pad is used to soak up the urine, at the end of the day, simply wash this towel.