A diaphragm is a flexible silicone cap. You insert it into the vagina so that it covers the cervix properly. You must use spermicidal gel (a diaphragm is not reliable without this gel). The diaphragm retains the sperm and the gel immobilizes the sperm cells.
Just like a condom, a diaphragm helps with family planning and is one of the products that support sexual health. And so in our opinion they fit very well into our range.