Review on Optimized Mountain Bike Tire Liner and Bicycle Tire Protector – Fits 24", 26", and 29" Bike Tires by Reginald Hamilton

I've used a similar tire sealant in the past that has worked reasonably well. But this version is too slippery and too stiff in width. It will not stay in line with the tire even when installed under a partially inflated tube. If you imagine a straight bob run, a good bob stays at the bottom of the ditch. This product is more like a drunken bob, sliding up and down the sides of the ditch. Absolutely useless.