Anatomically shaped to fit the cervix, these hypoallergenic cups provide a simple yet efficient means of ensuring the maximum concentration of semen at the cervical Os. Increased pooling of the seminal fluid during homologous or heterogeneous insemination helps maximize the potential for success in these procedures. Cups are available with and without a stem and in eight sizes: 24 mm, 26 mm, 28 mm, 30 mm, 32 mm, 34 mm, 36 mm and 38 mm.