Ergonomic Cock Ring

This is an attempt at creating a cock ring that is more ergonomic than a simple ring shape.  This is comfortable enough to wear all day.  I have included files for 2mm diameter increments, so you can get just the right size.  The shape is not completely round so the diameter is just an average, and the ring is only symmetrical side to side (there is a top and bottom).  I hope you have fun with it!