Trek’s Eco design, a line of green-minded bikes, explores the whole life cycle of the bike — manufacturing, years of riding and eventual end of life. The bikes are made primarily of recycled (and recyclable) steel, as well as other various recycled materials. The company’s DreamBikes bike donation program is a partnership with the Boys and Girls Club that is helping reuse bikes and teach youngsters good eco practices. Trek’s Eco design, a line of green-minded bikes, explores the whole life cycle of the bike — manufacturing, years of riding and eventual end of life. The bikes are made primarily of recycled (and recyclable) steel, as well as other various recycled materials. The company’s DreamBikes bike donation program is a partnership with the Boys and Girls Club that is helping reuse bikes and teach youngsters good eco practices.