SEE ALSO: Song Ji Hyo launches her underwear brand 'Nina.Ssong'

They've become the endorsement models for Kyungdong Pharmaceuticals and they'll be appearing in commercials starting in 2015 for two different health products from the company.

Regarding their choice, a rep explained, "We felt that the healthy and bright image of the 'Monday Couple', who have given viewers much laughter over the years, matched well with products that protect our health. Thus, we selected the two as the new faces of Kyungdong Pharmaceuticals... We expect that with the airing of the commercials starting in January featuring the two familiar faces, there will be a positive impact on our company's image."

Look forward to the fun commercials to come featuring these two!