Made of high quality material, which is durable and toughness. Durable and lightweight, has strong anti-pressure ability Designed to protect your bike tires from punctures. Provides physical barrier to block nails, thorns, and other debris Easy to install, just place it between inner tube and wheel, to offer powerful puncture protection Necessary replacement part for outdoor cycling traveling, gives you a smooth, stable and comfortable ride GUARANTEE: If you have any problem with this product, you can just take advantage of our 180 days warranty. We will replace it or give your money back for any reason Our tire liners, are designed to protect your bike tires from punctures. Installs easily between the tube and tire to offer powerful puncture protection. One package include two piece for one bike front and rear tire. You are worth it. Specifications: Material: Polyurethane Polymer Color: Transparent (as show in the pictures) Package Weight: approx. 72-116g Type Options: 700C, 26", 27.5", 29" (Optional) Size(T x W): 0.5 x 25mm / 0.019" x 0.98",suitable for road bike 700c; 0.5 x 40mm / 0.019" x 1.57", suitable for 26" MTB bike, requirements of tire width 1.5"-2.1"; 0.5 x 40mm / 0.019" x 1.57", suitable for 27.5" MTB bike, requirements of tire width 1.5"-2.1"; 0.5 x 40mm / 0.019" x 1.57", suitable for 29" MTB bike, requirements of tire width 1.5"-2.1" Length: approx. 2.13m / 6.98ft(700C) 2.07m / 6.79ft(26"MTB) 2.24m / 7.34ft(27.5" MTB) 2.26m / 7.41ft(29"MTB) Quantity: 2pcs Package Included: 2 x Tire Liners