Eider has recently released a 'making-of' video�showing behind-the-scenes footage of �SNSD's�YoonA and charismatic actor�Lee Min Ho's series of commercials for the mountaineering sportswear brand.� Previously, Eider revealed scenes from the pair's photoshoot. This new clip shows the battle both celebrities had as they tried to climb the side of a steep mountain. �Fans will be impressed to see just how much endurance and determination both YoonA and Min Ho display. Of the endorsement, Lee Min Ho has said,�"Every man wants to be an outdoor brand model, so I'm very happy about that and I will work very hard to establish a positive brand image." Check out the full video below! Tip:�Choco