Joe's No-Flats Inner Tube Sealant is a yellow fiber gel designed for tubes, featuring micro-fibers that prevent punctures up to 3mm in the tread. It offers longevity of up to 3 years in the tube and is non-toxic. The sealant is easy to install and compatible with all valve types. For optimal puncture resistance, add fresh sealant every 12 months. In case of a puncture, spin the wheel to distribute the sealant and quickly resume your ride.