Chemical engineers from Atofina (Hutchinson's sister company) designed and developed this non-latex based sealant with Aramid pulp to fill holes up to 3mm in diameter. It works well in its job task and stays wet and emulsified for a full season before breaking down. Works with any tubeless tire be it road or mountain. Sold in 4oz bottle.
I was hesitant to buy this cause the Hutchinson fast air canisters suck so bad. But glad I did, this stuff is everything Stan's tries to be but better. It doesn't dry up and clogs larger holes as well.
Pros: stays wet, better than stans
Cons: a tad bit pricey