It's very thick and heavy! If your main purpose is to avoiding flat, it definitely does exactly what it does! But it will slow you down in about 3 to 4 miles per hour. I took it out of my road bike for a thinner, lighter tubes after 6 months of riding almost every day along all trails in southern California and I am very happy with the speed that I have gained.
Great for comfort bike, but not road bike if you want to go fast.
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