DescriptionThis product is made of material and is durable.The puncture - resistant lining prevents the tire from being damaged by hard material.Significantly reduces the rate of tyre failure during long distance cycling or over rough terrain.Features-Color:Blue -Material:NOPP special glue -Size:9.00X9.00X2.10cm/3.54X3.54X0.83in - Premium material, good acid resistance, wear resistance, toughness and good fatigue resistance. - Moderate elasticity, no displacement after weathering and scratching of the inner tube. - Puncture-proof liner prevents tire from being compromised by hard material. - Substantially reduce tire failure rate during long distance cycling or on terrains of bad condition. - When assembling, pay attention to the removal of copper scrap, water and oil.