K-Shield protection and a long lasting compound make the Kwick Drumlin a reliable companion. Burly side knobs give confidence and grip on wet or loose conditions. Feels at home on concrete as well as gravel paths and forest roads. For adventurous riders who don't want their tire to compromise them on the route. Explore new paths also where the road ends. STANDARD RUBBER COMPOUND (SRC): Standard Rubber Compound combines the best attributes of low rolling resistance, high durability and tread longevity into one universal package that benefits riders from daily commuting to weekend touring. K SHIELD (KS): A 3mm layer of light, flexible rubber containing aramid and ceramic particles inside the tire under the tread area only. Designed to prevent punctures and increase tire life.