High-Quality Material: This inner tube is made of thick butyl rubber, providing superior wear resistance, puncture-resistance, and anti-skid performance.It is superior in air tightness, elastic damping, and aging resistance compared to natural rubber.Durable Tube: Featuring a high-quality reinforced valve that preserves more pressure and withstands any pressure changes, this solid tube has been developed to respond to uneven road conditions, providing durability and longevity.