The Race Day tubeless sealant from Stan's NoTubes was developed in collaboration with world-class athletes and their mechanics and offers effective puncture protection for riders of all levels during races. The Race Day formula contains the same patented blend as the original Stan's NoTubes sealant, but with 200% more sealing crystals. The additional XL crystals seal larger holes and cuts more efficiently. For reliable performance, it is recommended to visually check the fluid level of the Race Day sealant in the tyre every 2-3 weeks. To extend the life of the Race Day sealant, it can be mixed with Stan's original sealant. One litre of Stan's Race Day sealant can seal up to 16 tyres. The sealant is safe for both humans and the environment as it is made from natural latex and contains no toxic or hazardous substances. The bottles of Stan's Tubeless Sealant are made from 30% recycled material and the labels can be easily removed to optimise recycling. Important information: The Race Day sealant from Stan's NoTubes cannot be filled through the valve due to the XL sealing crystals and must be poured directly over the bead into the tyre. The floating XL crystals can cause noise while riding.