I love the idea that Martha Kent fashioned her son Clark's (Superman) costume using Kryptonian fabrics that came with him on his spaceship. This version of the uniform's origin is found in the 1986 comic The Man Of Steel.
One of the things that always caught my attention about this character is his relationship with his mother.
Though Superman may derive his superpowers from his Kryptonian heritage, his greatest power of all comes from his upbringing by his adoptive parents Martha and Jonathan Kent. The kindly Kansas farmers imbued their moral compass and deep sense of compassion into their son Clark, making Superman a very special character to me.