Contains Latex Comfortable as they stretch. Attach with single-sided or double sided foam. Attach sheath tubing directly to leg bag or tubing. Each Uro-Cath is a latex sheath that connects directly to a urine bag. The foam is wrapped around the penis shaft and the sheath is rolled over the head and shaft of the penis. Make sure you press the sheath over the foam strip to ensure a good seal. Uro-Cath is a non adhesive sheath that uses a double sided foam.