The invaders are the newest wheels in the Bigfoot line. The latest Bigfoot innovations offer rippled inner walls, which maximize energy return. Coming in at 75mm in diameter, 81a in Hardness, and 56mm in Width. Slightly offset hub with a 51mm contact patch, rounded inner edge and sharp outer edge. All of these details put together equal a wheel with fast rolling speed, smooth ride, good grip with good slide characteristics. Great traction around corners or in carves. Designed for downhill and some free riding.