Pirelli Cinturato SmarTUBE TubeOh Yeah, It's Big Brain TimeLightness plays a key factor in how fast a wheel can rotate. With a lighter setup, your wheels can rotate faster and you can accelerate more efficiently. The Pirelli Cinturato SmarTUBE Tube is designed for gravel adventure and endurance. This tube is made of Thermoplastic Polyurethane, also known as TPU, making it lighter, more compact, and as resistant against punctures as an equivalent tube made of butyl. FeaturesUltralight at only 70g for a 28-35mm gravel tubeMade of TPU that is lighter and just as durable as butyl tubesMore compact so you can pack more in your bagSPECIFICATIONSWheel Size700c, 650bWidth28-35, 33-45, 35-45, 40-50mmValve TypePrestaRemovable Core-Stem Length / Type60mm, Not ThreadedWeight45g - 110g | Pirelli | Cinturato SmarTube Tube 700 x 28-35mm, 60mm