1.4. : Every tire produced is strictly quality controlled and durable. For example, if a person weighs 190 pounds and the tires are not damaged, they can cover more than 5000. 2.3. Thicker Rubber The conventional sidewall thickness is 0.75 to 0.98mm, while our sidewall thickness is 1.12mm, which is thicker than the sidewalls on the market, more puncture-proof and airtight. At the same time, due to the thick rubber that absorbs impact, you will not feel bumps and indentations, which increases the comfort of driving. 3.1. Product Specifications: Suitable for most mountain bikes, it is the most widely used size on the market, compatible with 26 x 1.75 to 2.125 tires. At the same time, the inflation valve is a 32mm standard Schrader valve. 4.2. Reinforced valve design: We conducted a statistics before production. In the case of hose leakage and rupture, 70% occurred at the interface between the valve and the valve stem. Therefore, we deliberately thickened the interface. Therefore, the inner tube adopts a tear-resistant reinforced valve design.