The SQR system from Carradice makes removing and attaching the saddlebag a two second affair and also allows a traditional saddlebag to be carried on a bike without saddlebag loops. The Carradice SQR comprises two main parts; a strong, rigid, powder-coated steel bracket to which the saddlebag is attached using it's standard leather straps; and a tough ABS plastic bracket that attaches securely to the seatpost with two stainless steel bands. The bracket contains a spring loaded retainer which means that, once attached, the bag and bracket cannot break free.