Lower rolling resistance, more comfort, no flats. Barkeeper uses a Hi-Tec fiber, synthetic latex, tubeless sealant to provide the optimal tubeless experience for all cyclists. Seals punctures up to 7mm Works up to 8 bar/116psi and with all tyre brands Lasts longer than other sealants, does not ball up or dry out CO₂ compatible The formula is ammonia free, hypoallergenic, skin safe and non-corrosive Contents 1 x Dynamic Barkeeper Tubeless Sealant 1L Brand DYNAMIC Weight 2.21 lbs Volume 1,00 l