Continental: MASTER OF SPEED Dubnital is designed for dry to damp conditions and for rocky, hardpack, and medium loose soils. Master the challenges of modern cross-country and downcountry riding at speed. Dubnital supersedes its predecessor, the championed 'Race King', and takes performance to the next level. TERRAIN Ideal for hardpack terrain CASING Trail : A light and durable single-ply carcass construction, ideal for Trail use cases. COMPOUND Rapid: When speed and acceleration on flat and inclines is all that matters, then the Rapid compound is your go-to option. Inspired by the characteristics of compounds used in our road, race and gravel tires. Tubeless Ready: For initial mounting we recommend to use at least 30 ml of Conti RevoSealant per tire. Then spin the tire (wheel) to spread the Conti RevoSealant inside of the tire and pump to the allowed maximum pressure. Check the pressure before the next ride and adjust to your desired PSI. This tire is Hookless compatible to its limited max. pressure. Please check wheel instruction and tire packaging for detailed information