- Duvall, WA
I have Flatout in all of my 26x4 fat tires. I saw a YouTube video that compared Mr. Tuffy Tire Liners, Tannus Armor, Green Slime, and Flatout. The Flatout performed the best. I've got 1200 miles on my main ebike, lots of trail riding, zero flats. I buy the 32oz bottles and put 16oz in each tire.