Schwalbe land cruiser road tyre k guardthe easy rolling schwalbe land cruiser plus tyre is ready for any terrain thanks to level 3 k guard puncture protection features typewire carcass k guard compound sbc skintwintechnologieslevel 3 k guard this guard has been proven for many years it consists of natural rubber and is reinforced with kevlar fibres together with the 50 epi carcass all active line tires are well protected against punctures kevlar is a trademark of dupont active lin