Abstract: This invention relates to an optical cable, in particular to an optical fibre having an axially extending glass strand for channelling light therealong, and a jacket layer disposed around the glass strand, the jacket layer having a textured outer surface for facilitating, under the influence of a fluid drag, the advancement of the optical cable along a conduit, wherein the glass strand in cross section to the axial direction has a width of less than 100 microns. The reduced width of the glass strand(s) in the cable will cause the cable to be less stiff, which will be particularly beneficially when installing the cable using a blowing technique.