An apparatus (10) arranged to cover an objective handle (220), the apparatus comprises: a flexible bag (20) open at one end (25)； an annular skirt (30)； and a safety ring (40), said safety ring arranged to pair securely with said annular skirt and thereby secure the open end of said flexible bag, wherein said annular skirt comprises: a ring-shaped inner edge ( 50), said inner ring-shaped edge defines a longitudinal axis (120) of said annular skirt； and a plurality of skirt fingers (60) radially distributed around said inner ring-shaped edge and extending from the inner ring-shaped edge toward the longitudinal axis of said annular skirt, wherein said security ring comprises a plurality of safety ring fingers (100) radially distributed around an inner perimeter (170), and extending therefrom, from a safety ring edge (160) towards the longitudinal axis of said annular skirt when said ring of safety is matched with said annular skirt, characterized by: said plurality of skirt fingers (60) that extend uniformly at a predetermined first radial distance (130) from the longitudinal axis of said annular skirt, the extension of each of said plurality skirt fingers connected to the extension of the adjacent skirt finger by at least one respective skirt connection member (140)； said at least one skirt connecting member in cooperation with said plurality of skirt fingers defining at least one skirt band (150) established around the longitudinal axis of said annular skirt at a radial distance (155) at least equal to the first predetermined radial distance (130) and less than the radius (55) of said inner ring-shaped edge (50)； said plurality of safety ring fingers (100) extending uniformly at a second predetermined radial distance (180) from the longitudinal axis (120) of said annular skirt, the extension of each of said plurality of safety ring fingers connected to the extension of the adjacent security ring finger by a respective security ring connection member (190)； and said
