Caffélatex 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 tire
Caffelatex is a liquid, synthetic latex based tire sealant. It's ammonia-free, so it won't harm your tires, tubes or rims. It's available in a 1000ml or 250ml bottle. Caffelatex will seal punctures as big as 5mm in mountain and 3mm in road tires.
"Having spent six months using several different sealants back-to-back, we can confidently say this is the highest performing one we have tried so far." - Matt Wragg -PinkBike.com Jan 2, 2014