Premium Inner Tube This TPU road bike ultralight inner tube has a removable valve and is compatible with rims and disc brakes. Its compact size, light weight, excellent toughness and high cost-effectiveness make it a must-have for cycling enthusiasts.Size and Material The size is 700 x 18 23 25 28 30 32C, suitable for a variety of road bikes. Its special new TPU material has excellent puncture resistance, ensuring a smooth and safe ride.The seamless inner tube is manufactured with integrated technology, and there is no trace of seams around the tube. The ring interface around the tube valve reduces the chance of trachoma and improves its durability.Lightweight weighs only 36 grams, which is about 100 grams lighter than traditional butyl rubber inner tubes. This significantly reduces the inertia of the rim, making sprinting and acceleration more responsive.