Some penis extender sleeves are closed on top, while others have an open tip. . Once erect, slip your penis into the sleeve and secure the testicle ring around.
I'm currently using an extender (as a stress relaxation device) with a into is blue /cold glans at the end of a set due to glans slipping out.
I am in my 2nd month of using an extender, (andropenis). I am currently 2 centimeters past my erection length, and the noose slips causing lots.