Effective contraceptive method without hormones, Bivea Milex Omniflex diaphragm. Product made of silicone, highly durable. In addition, it is useful against latex allergies. The design presents a small rim around the ring that has the function to keep the gel in place and reduce the passage of sperm. The product should be used with a contraceptive gel. Available in eight diameter sizes, from 55mm to 95mm in 5mm increments. Proper sizing should be determined by a physician or gynecologist. Diaphragm size: 75mm. Product is sterilization resistant.