High-quality puncture protection. Of course, all tyres can leak because they are filled with air. Further, the riding comfort palys an important role. CST only uses high quality tyre material to ensure high puncture protection. With the ultimate puncture protection line you can make a long bike tour without hesitation. The CST Platinum Protector combines two materials in an ideal way: the protective caoutchouc pad repels sharp objects and the EPS layer prevents the tube from puncture.