Swiss brand Freitag designs bag for the iconic Brompton bike | Wallpaper,Freitag x Brompton F748 Coltrane Review,Brompton x Freitag. Two iconic brands collaborate for a limited edition bag - F748 Coltrane. This special version of the prototypical, rectangular, recycled FREITAG backpack can be turned through 90 degrees and,Brompton x Freitag. Two iconic brands collaborate for a limited edition bag - F748 Coltrane. This special version of the prototypical, rectangular, recycled FREITAG backpack can be turned through 90 degrees and,Swiss brand Freitag designs bag for the iconic Brompton bike | Wallpaper,