Use your tool longer with the Cock Cage by Titanmen. This stretchy cock 'ring' is more like a short cock sleeve, with an intense ribbed texture to add lots of stimulation for your lover, and an exciting constricted sensation for you. Cock rings may help with endurance, and they can also help keep you harder. 

The Cock Cage is made from non toxic, phthalate free thermoplastic elastomer, and it stretches to fit most. Like all cock rings, it should not be worn for long periods of time, 20 minutes is the generally recommended maximum.