The disease is 99% curable if caught early and the overall cure rate is more than 95%.with experts stressing that early detection saves lives.
The Health Challenge Wales campaigns will see hundreds of shower cards and posters featuring Jones put up in changing rooms throughout Wales.And the Ospreys number eight, who led Wales to their second Grand Slam in four seasons, is urging other young men to make their own regular health checks.
Jones said he hoped that that the publicity would dispel the embarrassment that often surrounded the subject and encourage men to examine themselves.
"When it comes to testicular cancer our health is quite literally in our hands. There is a very high success rate of treatment for testicular cancer if it's caught early enough.
"Self-examination is crucial and I hope that these shower cards and posters will help remind men to have a quick check after a game, workout or shower.
"It could save your life."
Tony Jewell, the chief medical officer for Wales, added: "Testicular cancer does not have to kill. It can be treated if caught in time.
"With 100 men being diagnosed every year with this form of cancer it's clear that there is a great deal more that we can do to remind young men to regularly examine themselves.
"By circulating posters and shower cards throughout leisure centres and sporting organisations in Wales we hope to raise awareness of this important issue."