Vittoria Standard Butyl Inner Tubes for Folding Bike - 20 inch Size_700x28c the ViZ100 stands out with

the ViZ100 stands out with Daytime Hyperflash™ mode in an economical package

Very light bottle cage

The bottom channel allows for easy fine-tuning of the air chamber

Premium bottle

Vittoria Standard Butyl Inner Tubes for Folding Bike - 20 inch Size_700x28c the ViZ100 stands out withSTANDARD Butyl inner tubes butyl inner tubes for everyday use good puncture resistance and airretention wall thickness 0. 9 mm Protection in any instance general purpose butyl inner tubes for everyday use. Standard inner tubes are made with high quality synthetic rubber with a wall thickness of 0. 9 mm. Standard tubes offer good puncture resistance and a solid airtight performance in every instance.