Mr. Tuffy Tire Liner 26" x 2.5" Fits 29&quot; x 2.35&quot;- 2.5&quot; tires Advanced micro-shell technology features a hardened protective outer layer and an ultra-soft inner layer to cushion the tube Weighs less than liquid sealants or thorn-resistant tubes Easy to install--no gooey mess Contributes to a smooth, stable ride