An optical fiber cable comprising: a central strength member lying substantially along a longitudinal axis of the optical fiber cable ; a first layer wrapped helically around the central strength member , wherein the first layer includes a plurality of water swellable yarns (164a-164c); a plurality of buffer tubes stranded helically around the first layer , each of the plurality of buffer tubes is formed of a combination of two sub layers having different material; a second layer surrounds the plurality of buffer tubes , wherein the second layer cross helically surrounds a core of the optical fiber cable ; a third layer wrapped helically around the core of the optical fiber cable ; and a fourth layer surrounding the third layer , characterized in that the central strength member is formed of fiber reinforced plastic, the central strength member has a diameter of 3.0 mm, wherein the two sub layers include a first sub layer and a second sub layer; the first sub layer is formed of polycarbonate, the second sub layer is formed of polybutylene terephthalate, each of the plurality of buffer tubes encloses a plurality of optical fibers , the second layer is formed of a pair of binder yarns the pair of binder yarns comprising: a first binder yarn wrapped helically in clockwise direction; and a second binder yarn wrapped helically in anti-clockwise direction, the third layer is formed of a plurality of water swellable yarns, the fourth layer is formed of high density polyethylene, the optical fiber cable has a diameter of 7.7 mm ± 0.2 mm. a central strength member lying substantially along a longitudinal axis of the optical fiber cable ; a first layer wrapped helically around the central strength member , wherein the first layer includes a plurality of water swellable yarns (164a-164c); a plurality of buffer tubes stranded helically around the first layer , each of the plurality of buffer tubes is formed of a combination of two sub layers having different material; a second layer surrounds the plurality of buffer tubes , wherein the second layer cross helically surrounds a core of the optical fiber cable ; a third layer wrapped helically around the core of the optical fiber cable ; and a fourth layer surrounding the third layer , characterized in that the central strength member is formed of fiber reinforced plastic, the central strength member has a diameter of 3.0 mm, wherein the two sub layers include a first sub layer and a second sub layer; the first sub layer is formed of polycarbonate, the second sub layer is formed of polybutylene terephthalate, each of the plurality of buffer tubes encloses a plurality of optical fibers , the second layer is formed of a pair of binder yarns the pair of binder yarns comprising: a first binder yarn wrapped helically in clockwise direction; and a second binder yarn wrapped helically in anti-clockwise direction, a first binder yarn wrapped helically in clockwise direction; and a second binder yarn wrapped helically in anti-clockwise direction, the third layer is formed of a plurality of water swellable yarns, the fourth layer is formed of high density polyethylene, the optical fiber cable has a diameter of 7.7 mm ± 0.2 mm. <EOS>