Coloplast Conveen Optima - Silicone Male External Condom Catheter is made from silicone that makes it stretchy, breathable and gives you a perfect fit. The adhesive ensures optimal security at all times and is skin friendly, making the Optima catheter ideal for everyday use. The anti-kink bellows ensures a free flow at all times and allows for free movement, ensuring a secure flow. Packed in the unique new smart pack, Conveen Optima is so discreet and easy to carry that it simply slips into your pocket. The application of the external catheter is simple with the help of the double strip grip, even when using gloves. latex-free.