Retractable antennas, and antennas you'd rather not risk, rule out the usual car flag. A "Sale" clip on paddle flag kit mounts to a window instead, and its pivoting pole lets the double-sided flag turn with the wind while the message stays readable on calm days. Clip a few along the front line for a weekend sale.
A window clip keeps antennas out of the picture, and the kit goes together easily and comes off when the sale ends. Because the pole pivots, the cloth flag turns with the wind instead of wearing itself out.
Measurements include 13 in. L x 9 1/2 in. W (flag) and 43 in. T (pole). Red, black and white cloth flag with a fiberglass pole. Kit includes two poles, a window clip and the flag. Double-sided; easy to assemble and remove.
Orders placed before 3 PM local time ship the same business day. Weekend orders ship the next business day.