This tubular penis cage from Rimba is completely closed and keeps your best friend safely locked up. The Houdini penis cage tube comes with a hinge cock ring which is attached to the penis root. Then insert the penis into the closed tube and secure the two parts with the included, pretty, silver-colored metal lock. You have the choice between two caps, one is completely closed, the other cap has 3 openings that allow urination. With 4.5 cm diameter hinged cock ring and total length of 10.5 cm.