4 Layer Leak Proof Underwear Physiological Culottes Menstruel Period Thongs are the ultimate solution for menstrual protection and comfort. These thongs are perfectly designed as physiological culottes for women by our designers and offer superior leak proof technology and functionality. With four layers of absorbent and moisture wicking fabric, they provide excellent protection against stains and leaks during menstruation. The design of these 4 Layer Leak Proof Underwear Physiological Culottes Menstruel Period Thongs ensures a comfortable fit, while the leak proof barrier which keeps you feeling confident and secure all day long. We offer these thongs in several sizes to choose from.