Quality PSX Silicone: The Conveen Optima catheter is designed with durable and comfortable PSX Silicone. Self-Adhesive Seal: A self-adhesive seal on the silicone external catheter ensures a secure, leak-proof fit. Medium Size: This medium-sized self-adhesive catheter provides a comfortable and accurate fit. Non-Invasive Design: The non-invasive design of the catheter promotes user dignity and autonomy. Easy Application and Removal: Enjoy a hassle-free experience as the Conveen Optima male external catheter silicone is easy to apply and remove.