Unique design takes up less space than original BOB®. Able to fit on the adjustable Wavemaster™ base. “Skin” is constructed of high-strength plastisol. Inner cavity is filled with high-density urethane foam. Base can be filled with water or sand and weighs approx. 270 lbs. 7 height adjustments from 60” to 78”. Base included. One year limited warranty. Made in the USA.