Caffelatex Tire Sealant is different than other liquid latex sealants on the market -- it has a foaming agent that effectively creates a tire filling foam as your tire rolls down the road or trail. The advantage is that the Caffelatex foaming sealant can seal the rim/tire junction and sidewall punctures as you ride. For a sidewall puncture, other riders will have to stop and jiggle their tires to allow sealant to flow towards the damaged portion of the tire. But you'll ride right on by as Caffelatex does the job for you.Caffelatex is a liquid, latex based tire sealant. It's ammonia-free, so it won't harm your tires and rims. It's available in a 1000ml bottle that, depending on your tire size and type, will allow you to install and seal at least ten tires. Caffelatex will seal punctures as big as 6mm in mountain and 3mm in road tires with high pressures.