Features： 1、Made of high quality material, which is durable and toughness 2、Designed to protect your bike tires from punctures 3、Installs easily between the tube and tire to offer powerful puncture protection 4、High tensile strength and easy installation 5、Provides physical barrier to block nails, thorns, and other debris Specification： Description: 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. Features:  1. Made of high quality material, which is durable and toughness. 2. Designed to protect your bike tires from punctures. 3. Installs easily between the tube and tire to offer powerful puncture protection. 4. High tensile strength and easy installation. 5. Provides physical barrier to block nails, thorns, and other debris. Specifications: Material: Polyurethane Polymer Color: Transparent (as show in the pictures) Package Weight: approx. 72-116g Type Options: 700C, 26", 27.5", 29" 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" bike, requirements of                        tire width 1.5"-2.1";                       0.5 x 40mm / 0.019" x 1.57", suitable for 27.5" bike, requirements                        of tire width 1.5"-2.1";                      0.5 x 40mm / 0.019" x 1.57", suitable for 29" bike, requirements of                        tire width 1.5"-2.1" Length: approx. 2.13m / 6.98ft(700C)               2.07m / 6.79ft(Suit for 26" Bike )               2.24m / 7.34ft(Suit for 27.5" Bike )               2.26m / 7.41ft(Suit for 29" Bike ) Quantity: 2pcs Package Included: 2pcs tire liners Note: Not 100% puncture-proof. Package List：