If you’re running tubeless tyres, then you’re probably using sealant. Caffelatex is an ammonia-free synthetic latex tyre goop with an added foaming agent. Riding causes bubbles to build up, eventually filling the tyre cavity and helping the liquid coat the inside of the tyre more effectively than standard thin latex.
This means better sealing for small sidewall cuts and scuffs, as well as simpler and quicker initial set-up. We also discovered that foamed latex spreads everywhere when mis-seated tyres are blown off the rim, so inflate indoors with care or use someone else’s kitchen!