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; - at least one first take-up roller having a substantially vertical first rotation axis rotatably connected to said lateral upright of said support frame; - at least one 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; - at least one handle bar, which is fixed to the second lateral edge of said fabric, said handle bar extended along an extension axis substantially parallel to the first rotation axis of said take-up roller, internally provided with at least one vertical seat and movable between: - at least one open position, in which said handle bar is placed in a proximal position with respect to said take-up roller, at least partially freeing said opening of said fabric, and - at least one closed position, in which said handle bar is placed in a distal position with respect to said take-up roller with said fabric at least partially covering said opening; - at least one guide chain susceptible of being extended below said fabric and movable between a retracted position, in which it is housed within said vertical seat of said handle bar with said handle bar in open position and an extended position in which it is unwound below the fabric with said handle bar in closed position; - at least one upper flexible belt extended between a first end mechanically connected to said lateral upright of said fixed frame and a second end opposite the first end and susceptible of being unwound above said fabric; - at least one intermediate flexible belt extended between a third end connected to the second end of said upper flexible belt and a fourth end connected to said guide chain; said blind being characterized in that it also comprises: - at least one reel having a substantially horizontal second rotation axis, rotatably connected to said handle bar at an upper terminal; said upper flexible belt and said intermediate flexible belt being susceptible of being wound around said reel in a common winding direction; - elastic return means mechanically associated with said reel and configured for forcing the winding of said upper flexible belt and of said intermediate flexible belt. - 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; - at least one first take-up roller having a substantially vertical first rotation axis rotatably connected to said lateral upright of said support frame; - at least one 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; - at least one handle bar, which is fixed to the second lateral edge of said fabric, said handle bar extended along an extension axis substantially parallel to the first rotation axis of said take-up roller, internally provided with at least one vertical seat and movable between: - at least one open position, in which said handle bar is placed in a proximal position with respect to said take-up roller, at least partially freeing said opening of said fabric, and - at least one closed position, in which said handle bar is placed in a distal position with respect to said take-up roller with said fabric at least partially covering said opening; - at least one open position, in which said handle bar is placed in a proximal position with respect to said take-up roller, at least partially freeing said opening of said fabric, and - at least one closed position, in which said handle bar is placed in a distal position with respect to said take-up roller with said fabric at least partially covering said opening; - at least one guide chain susceptible of being extended below said fabric and movable between a retracted position, in which it is housed within said vertical seat of said handle bar with said handle bar in open position and an extended position in which it is unwound below the fabric with said handle bar in closed position; - at least one upper flexible belt extended between a first end mechanically connected to said lateral upright of said fixed frame and a second end opposite the first end and susceptible of being unwound above said fabric; - at least one intermediate flexible belt extended between a third end connected to the second end of said upper flexible belt and a fourth end connected to said guide chain; - at least one reel having a substantially horizontal second rotation axis, rotatably connected to said handle bar at an upper terminal; said upper flexible belt and said intermediate flexible belt being susceptible of being wound around said reel in a common winding direction; - elastic return means mechanically associated with said reel and configured for forcing the winding of said upper flexible belt and of said intermediate flexible belt.