Features: Tough nylon wheel rim ribbon resists punctures from road debris while its light construction (approximately half the weight of rubber) enhances cycling speed and handling efficiency. Made with dense nylon makeup and anti-slip texturing, this tire insert secures wheel rims tightly to minimize shifting during intense rides or uneven terrain. Ideal for mountain riders, daily commuters, and journey cyclists seeking consistent flat defense without sacrificing ride standard or cycle control. Performs excellently on stone-covered tracks, damp city streets, and long-distance travels where pointed debris, vibrations, and temperature variations test standard tire inserts. Its climate-adaptive construction withstands stiffening or wear over time, ensuring ongoing compatibility with versatile cycles, road bikes, and electric bike wheels. Specifications: Product name: Nylon wheel rim insert Substance: Nylon Size: 12/14/16/20/22(451)/24/26/27.5/29/700mm/349 Color: Red Purpose: Fits between wheel rim and inner tube to shield from rod punctures; Enables greater tire pressure, reduces rolling resistance, and improves blowout prevention. Package Includes: (Single) Nylon wheel rim insert note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.