AntiStab Protection: Includes 2 PVC tire liners in yellow and red for 26inch, 27.5inch, and 29inch wheels, suited for road or mountain bikes. They act as a shield against thorns, glass, and road debris to help prevent punctures during rides. Spoke Strips Compatibility: Designed for general use with most standard rims and tires. Lightweight liners install easily between the inner tube and tire without gooey mess or complicated tools. LongLasting Defense: Made of abrasionresistant PVC material that resists erosion and wear, helping to extend the life of your inner tube and support a smooth, stable ride over rough surfaces. Quick Installation Process: No insert needed. Simply place the 18mmwide liner inside the tire before mounting, ensuring proper alignment to guarantee protection where the spokes meet the tube. Size, Color, and Fit: 2pack, yellow and red PVC liners suitable for 26', 27.5', and 29' wheels on road or mountain bikes. No modification required; works with most standard rims and tires. Practical Use Scenarios: Mountain biking on thorny or rocky trails where punctures are likely, providing extra protection between tube and tire. Urban commuting on debrisfilled streets (glass, nails, and sharp debris) to reduce puncture risk. Gravel or mixedterrain rides where a lightweight, reliable shield helps maintain a smooth ride over rough surfaces.