Your little ones have a youthful, intrepid spirit that sees them riding wherever the wind takes them. Most of the time, however, it takes them straight through thorns and debris, leaving you with the unenviable task of changing out flat after flat. But with our Standard Presta Valve Youth Tubes, you can rest assured that they're riding on tough tubes that are built strong to last. And to make sure of it, they feature a molded method of construction that ensures a consistent thickness of butyl rubber. This means that they'll roll smooth and stay tough, ride after ride. Consistent thickness & quality.