Specialized's 2Bliss Ready Tire Sealant was custom-designed in partnership with a leading laboratory for tire sealants, and it also underwent extensive real-world testing with our Factory Athletes. What this collaboration developed is an innovative, ecological formulation that's the answer to the sealing requirements that riders like you've been demanding.

It will immediately seal punctures up to 6mm, whether it be on a road or mountain tire, as well as across global temperatures (-4° - 158°F). Natural, micro holes in tire sidewalls will seal well, and the system is safe for use with latex inner tubes, even inside tubulars. Please note that this sealant is ammonium, protein, and latex free, so it holds no potential for allergic reactions, and there's no risk of it creating damage to bike parts.