Subzero tire sealant. It's formulated to maximize extreme frigid temperature; enabling riders in the far North to ride with flat protection. All while offering the same quick-sealing properties you've come to expect. - Premium Latex coats the whole casing, from tire bead to tread cap - Seals punctures up to 1/4" with the use of Nanites - Developed to add as little weight to a tire as possible - Made of eco-friendly biodegradable ingredients - Subzero sealant is developed for use in below-freezing conditions down to -20F