You can't see this part on your bike, but it's still damn important. Flat tires do not only look awful but are also veryyyy uncool. Most flat tires are caused by the rims - therefor make sure to protect your tubes from your rims. They just can't live together. So we have the perfect solution for your wheels - the Ruff rim tape is so wide it keeps your tubes safely apart from its enemy and suits 24" and 26" rims.
If you don't hear a whistling sound, then the rim tape is doing its work.