Abstract: A pack system worn on either thigh held in place with strapping around the thigh and one or more straps connected to a waist belt. While the modular pack system can have one or more pouches it includes removeable and replaceable mounting provision for a plurality of removeable interchangeable pouches. The backplane mounting portion of the pack system on which removeable pouches are mounted is, as a maximum, approximately eight inches wide by ten inches high having adjustable leg straps and vertical strapping utilizing buckles permanently attached. Elastic looping is fastened to the bottom of the backplane mounting portion. The backplane portion is constructed with a double layer with one vertical side not sewn shut allowing space for storage of flat flexible items such as maps, photographs, instructions, orders and others, with such an edge sealable as by Velcro closure stripping.