The Joe's No-Flats Gel Self-Sealing Schrader Valve Tube is a premium tube pre-filled with Joe's Super Sealant, capable of instantly sealing punctures up to 3mm. It boasts a long shelf life of up to 3 years and requires no maintenance, remaining effective for up to 2 years. Available in popular sizes and valves, it is also compatible with CO2 for added convenience.