Bicyclist's hand-portable rack-mounting garment-pack w/panniers

A cyclist's hand-portable commuter-pack apparatus of sewn fabric construction configured to be readily adapted to mounting upon an existing conventional rear/front carrier-rack;

• comprising:
• an envelope type first compartment formed from a blank layer defining a first substantially flat portion folded in half upon an opposite substantially flat portion and having an outer edge closed by a perimeter zipper except for the folding edge perimeter, the envelope compartment thus opening out by unzippering and unfolding the blank layer, the first and opposite flat portions being of substantial width so as to thereby receive the cyclist's coat-jacket when the jacket is specially folded spinewardly so as to lay substantially from one end of the envelope compartment to the other along with a pair of slacks if desired and whereupon the first flat portion is folded over the opposite flat portion and closed as an envelope by the zipper, the arrangement thus serving to eliminate unsightly horizontal creases in the coat since the jacket is never folded 180-degrees over upon itself in a direction horizontal to the standing wearer:
• said apparatus being converted into a hand-carried modality by the provisions of a pair of satchel like hand-grips, one of which is retracted into each end of the zippered envelope, and capable of being manually extracted by provision of opposed/dual sliders on said perimeter zipper which allows only a limited length of the zipper to be opened simultaneously at each respective extreme end of the zipper;
• and said apparatus being converted into a rack-carried modality wherein the said zippered ends are closed entirely and the envelope is adopted to be centrally draped transversely over a carrier-rack of a bicycle in inverted-U formation, whereupon a pair of buckled straps are attached at the resulting underside of the draped envelope are secured around and beneath the carrier-rack, while another pair of mounting straps are attached at each side of the envelope where they may be immediately wrapped around a portion of the bike-frame such as the dual/afttrailing seat-stay down-tubes so as to hold the envelope intimately thereto, plus a special support-rod is sewn into the inwardly facing surfaces of the envelope as extensions of each said seat-stay mounting-straps, each rod thus extending diagonally downward so as to lay against the carrier-rack's substantially vertical support-arms which attach near the wheel-axis and thereby prevent the envelope from becoming entangled into the wheel-spokes;
• plus two additional longitudinal/support-rods are sewn into the envelope and adopted to contact the right and left sides of the carrier-rack, the rods each extending substantially along the full width of the inward facing surfaces of the envelope which may extend aftward a few inches in cantilevered manner from the carrier rack so as to thereby effectively extend the useful length of the envelope without otherwise drooping down, the rods being sewn into the underside of the envelope via webbing like coverings;
• and further including optional means by which other compartmentation may be integrated with said envelope for still greater utility function.