Gary and his then-girlfriend Amber Portwood welcomed a baby into the world as teenagers and became household names in the US after appearing on MTV's 16 & Pregnant.
The couple, whose daughter Leah is now six years old, have since separated and Gary is expecting his second child with long-term partner Kristina Anderson.
However, in his bid to help others avoid teen pregnancy, the 28-year-old reality star is bringing out a line of contraceptives.
The condoms are packaged in silver foil wrappers and feature Gary's face on the front. They also boast the slogan 'Put your Gary on! 99 per cent Gary-nteed'.
Gary unveiled his business venture to fans on Twitter, sharing a photo and telling them: "Revealing my condoms!"
Followers have been quick to respond, with one British guy saying: "These are actually awesome, should ship to the UK!"
In March, Gary will be appearing alongside Amber and their original co-stars, Maci Bookout, Catelynn Lowell and Tyler Baltierra, and Farrah Abraham, in a new series of Teen Mom.
The MTV series, which at present is only due to air in the US, will be catching up with the gang to see how their lives have changed since welcoming babies into the world as teenagers.
While Amber is getting her life back on track following a stint in prison, Maci is pregnant with her second child and Catelynn and Tyer have recently welcomed a baby girl called Nova into the world.
Reveal has been badgering MTV about if and when the new series will air in the UK - and when we hear, you'll be the first to know!
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