Features: Diameter: 30mm Length: Standard Size: Medium Material: Silicone, Latex-Free A standard length Conveen Optima urisheath will generally be suitable for a non-retracted penis, whereas, a retracted penis will require the shorter sheath. If the size of the penis is found to be in between two sizes, choose the smaller size. Silicone, self-adhering, one-piece catheter is packaged in a discreet, recyclable smart pack. Silicone, self-adhering, one-piece catheter. Easy on application is both simple and trouble-free with the double grip strip. The triple-action antileak system with antikink bellow, sure grip ribs and push ring ensures maximum security with collection bag. Comfortable wear silicone is soft and breathable. Balanced adhesive provides reliability and skin friendliness.