The Jack Rabbit from CST is a UST-certified mountain bike tire, meaning it can be run tubeless on an approved UST wheel. To keep you burning up the trail, the Jack Rabbit features a fast-rolling tread design with small ramped knobs. When the trail gets technical, our EPS (Exceptional Puncture Safety) puncture protection will give you the confidence to concentrate on your line. The same great tread pattern and puncture protection is also available in a tube-type version for riders not using UST-certified wheels.