Thinner and more flexible for lower rolling resistance, but they lose air pressure quickly and require daily topping up.
Standard butyl tubes generally cost between . Specialized performance tubes (TPU or Latex) or self-sealing options can range from $15 to $30+ . where to buy bike inner tubes
Wide and flat, like a car tire valve. Common on mountain, hybrid, and kids' bikes. Thinner and more flexible for lower rolling resistance,