There are said to be people who don't care for the Duck Duck Jeep thing. Color variation is dependent on color change location in spool. 
Other colors available upon request.
 
Mini measures approx 1.25" x 1.5" x 1.5"
Small measures approx 1.5" x 2" x 2"
Med measures approx 2.5" x 2.75" x 2.5"
Lg measures approx 2.5" x 3" x 3"