These darling panties are for the little lady that is in season and you don't want her making a mess on things. They can be used if your small pet tends to "mark" on things. They also work for the older dog that is incontinent.
They have a hole for the tail and velcro on each side with elastic on the top and bottom around the "waist" for a comfortable fit.
small: 12" to 16" around the waist.
medium: 14" to 18" around the waist.
large: 16" to 20" around the waist.