Fabric roller blind, which comprises: - a support frame provided with at least one lateral upright and intended to be fixed to a load-bearing structure in which an opening is made, which is defined at least between two lateral walls, an upper wall and a lower wall; - a take-up roller having a substantially vertical rotation axis rotatably constrained to said lateral upright of said support frame; - a fabric extended between a first lateral edge thereof fixed to said take-up roller and a second lateral edge thereof opposite said first lateral edge; - a handle bar, to which the second lateral edge of said fabric is fixed, said handle bar extended along an extension axis substantially parallel to the rotation axis of said take-up roller between a lower termination and an upper termination and movable between: - an open position, in which said handle bar is placed in proximal position with respect to said take-up roller, at least partially freeing said opening from said fabric, and - a closed position, in which said handle bar is placed in distal position with respect to said take-up roller with said fabric at least partially covering said opening; said blind being characterized in that it also comprises: - a lower pinion mechanically supported at said handle bar, placed at the lower termination thereof and engaged in a shape relationship with a lower rack intended to be associated with the lower wall defining said opening; - an upper pinion mechanically supported at said handle bar at said upper termination and engaged in a shape relationship with an upper rack intended to be fixed to the upper wall defining said opening; - synchronization means at least partially housed within said handle bar and mechanically connecting said lower pinion and said upper pinion in order to synchronize their movement along said lower rack and along said upper rack during the movement of said handle bar between the open position and the closed position; wherein said blind comprises at least one slidable wing slidably constrained to said support frame along a horizontal movement direction, and provided with a vertical upright parallel to said at least one lateral upright and provided with a handle susceptible of being constrained to said handle bar by means of coupling means. - a support frame provided with at least one lateral upright and intended to be fixed to a load-bearing structure in which an opening is made, which is defined at least between two lateral walls, an upper wall and a lower wall; - a take-up roller having a substantially vertical rotation axis rotatably constrained to said lateral upright of said support frame; - a fabric extended between a first lateral edge thereof fixed to said take-up roller and a second lateral edge thereof opposite said first lateral edge; - a handle bar, to which the second lateral edge of said fabric is fixed, said handle bar extended along an extension axis substantially parallel to the rotation axis of said take-up roller between a lower termination and an upper termination and movable between: - an open position, in which said handle bar is placed in proximal position with respect to said take-up roller, at least partially freeing said opening from said fabric, and - a closed position, in which said handle bar is placed in distal position with respect to said take-up roller with said fabric at least partially covering said opening; - an open position, in which said handle bar is placed in proximal position with respect to said take-up roller, at least partially freeing said opening from said fabric, and - a closed position, in which said handle bar is placed in distal position with respect to said take-up roller with said fabric at least partially covering said opening; - a lower pinion mechanically supported at said handle bar, placed at the lower termination thereof and engaged in a shape relationship with a lower rack intended to be associated with the lower wall defining said opening; - an upper pinion mechanically supported at said handle bar at said upper termination and engaged in a shape relationship with an upper rack intended to be fixed to the upper wall defining said opening; - synchronization means at least partially housed within said handle bar and mechanically connecting said lower pinion and said upper pinion in order to synchronize their movement along said lower rack and along said upper rack during the movement of said handle bar between the open position and the closed position;