Constructed of black tape and a black/red/white print, both of polyester, this is a very sophisticated design.  The pattern is of gradually thinning stripes of the printed fabric from end to a middle block and then mirrored to the opposing end.  The obi measures 12" x 70" allowing plenty of room to fold and knot.  Machine wash and line dry.  A laundry bag is recommended to protect the fringe from fraying and matting.