Here's what we're delivering: This item minimizes differences in appearance due to the pattern. The item will be labeled as "Handkerchief" for shipping. Please feel free to purchase with confidence. This is a set of three fully waterproof items made with carefully selected Japanese materials. Size: Approximately 22cm (length) x 17cm (width) (slight variations possible) Layer 1: Unbleached double-sided flannel (skin side) Unbleached double-sided flannel is a gentler fabric than standard products. There may be small black specks on the surface, which are cotton seed husks and a sign of being unbleached. They are harmless to the body and will come off in the wash. Layer 2: Breathable waterproof fabric (prevents water from passing through, allows humidity to escape) Uses "BIO GUARD," which has been treated with "antibacterial processing" to suppress the growth of bacteria on the fibers. This material is highly effective at inhibiting bacteria and is very durable to washing. This item uses the same fabric as a certain cloth menstrual pad manufacturer. Layer 3: Double gauze (underwear side) This waterproof type can be used for a wide range of purposes, including sweat, minor leaks, vaginal discharge, and menstruation (due to individual differences, we cannot guarantee against leaks). It can be used comfortably for warm-up activities, fertility treatments, during sensitive pregnancies, and by those experiencing menopause. #HIKARIE's Room