Kenda Kwick Drumlin Cargo 20x2.2 Standard TireSame fast rolling tread as the standard Drumlin with a special 4 ply casing paired with K Shield belting for a more robust heavy duty tire for cargo and E bike use. 4PLY 4 ply casing for a robust durable tire and reduced chance of flats from pinches and punctures. KS K Shield A 3mm layer of aramid and ceramic particles inside the tire under the tread area only Kenda`s entry level belting. EBIKE50 has achieved a passing rating for use with E Bikes up