Caya Silcs Contoured Diaphragm with Instruction DVD and Diaphragm Protective Case All Natural Ingredients Reliable, Latex and hormone-free Birth Control Made in Germany The Caya Silcs Diaphragm is a new modern free barrier device for a non-hormonal birth control with no side-effects, which was developed in close collaboration with American users to maximize the ease of use: It is designed to be inserted into the vagina, just like a normal tampon, and is placed directly in front of the cervix to ensure a reliable birth control. The Caya Diaphragm is made of Silicone and has a flexible metal frame, which simplifies the insertion and removal as well as suits continuously to the size to support an effective and reliable birth control. Before the Diaphragm is inserted into the vagina, one teaspoon (about 4 ml) of Caya or ContraGel is placed into the cervical cup and onto the external rim of the Caya diaphragm to reduce the motility of sperm cells and create an hostile environment inside the vagina for the sperm cells. Sent Tracked, Insured via Air and with Itemized Receipt to Create the Possibility of a Cost Reimbursement by US Health Insurance