Ships from Hong Kong. The female dogs also have menstrual period, it's good for them to wear the under wear for health and safety consideration. It can protect themselves and easy to wear it. It can keep warm for pets. The waist circumference is about 30 cm to 40 cm / 11.81 inch to 15.74 inch. Material: 100% cotton Feature: thin, soft, elastic and breathable It could be diaper for the little dogs which can't control physiological needs. It's safe and healthy for the bitches to wear the underwear when they are having the menstrual period. Wearing it, pets won't smudge the floor, sofa or their beds.