This is a pair of 20x2.25 Crown Gem Bicycle Tires with Dual Control Compound. The Crown Gem is ideal for all mountain and endurance riding because of the knob spacing and height. It has taller side knobs for better cornering control and an aggressive yet fast center knob pattern for undeniable traction. Even the width of the tire contributes to its consistent ride. Vee Tire has been a leading manufacturer of high quality bicycle tires and tubes since 1977. Produced in Thailand, each of their products are carefully crafted with select raw materials using state of the art modern technologies giving Vee Tire a leading edge over the cheaper low cost products on the market. Ride with confidence and Ride Safe with Vee Tire!