Orderd a set of Stop Flats 2 tire liners along w/a set of Schwalbe Marathon Plus and tubes. The Stop Flats 2 product advertizes itself as having a 'hard plastic' surface towards the inside of the tires and a softer coating towards the tube. The implication being a combo of Spinskinz and Mr Tuffys. Well, its a straight up croc. What you receive in effect is a 2-toned Mr tuffy. There's NO descernable difference in the 'hardness' of the 2 different colored material that make up the liner. So, I'm calling BS on this product.

I'm a hardcore Nu-teck guy and wanted to give pneumatics a shot, so I got the, generally conceded, best on the market. 700x28mm. LOVE the tires, hate the liners. Stick w/Spinskinz and Mr Tuffys and avoid this product.