On Amazon, EACH sign is $22 plus taxes - get three for less than the price of one! Higher discounts if you need a large number of these.  Have 2 designs as shown - each has the same design on the front and back. Fold flat for easy storage. ‎24.02 x 11.5 x 0.98 inches (so 2 ft tall and almost 1 ft wide) 2 lbs each sign Great for on the street, busy sidewalks or driveways, schools, camp, church, playgrounds - anywhere you would like drivers and/or bicycle riders to slow down and be aware.
 
Amazon listing for more info: https://www.amazon.com/Children-Playing-Caution-Driveways-Double-Sided/dp/B01E68CJ14?th=1