Tire Bicycle GIB, BMX 20 X 2.125 inch Puncture Resistant, Puncture Guard, thorn resistant, Comfortable ride by Biria 20-Inch by 2.125-Inch GRL BMX tire 20X2.125Puncture Resistance, Puncture Guard, Tire Punctre Resistance, Puncture Guard Layer, Long life, Comfortable ride , Easy Mounting 20-Inch X 2.125 Low Rolling Resistance