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Continental Tour 28" All Valve Auto 32/47-609/642 inner tube is a bicycle tube designed for 28-inch wheels with 32–47 mm wide tyres, providing reliable air retention and a convenient Auto valve for everyday riding.

Key Features

Construction and Design
The tube is made from butyl rubber, which holds air well and is suitable for regular use in different conditions. The elastic material allows the tube to adapt to the inside shape of the tyre and maintain stable pressure.

The Tour version is intended for 28-inch city, trekking, hybrid and touring bicycles. The 32–47 mm tyre width range allows the tube to be used with different everyday and touring tyre sizes.

Main Functions
The tube helps maintain the correct air pressure in the tyre and supports smooth bicycle rolling. When installed correctly, it reduces the risk of air loss and helps the tyre perform consistently on longer routes.

The Auto valve, also known as a Schrader valve, is convenient for everyday use because it can be inflated easily with most pumps and compressors. This makes it a practical choice for city and trekking bikes where simple pressure top-up is important.

Use and Compatibility
The tube is designed for 28" wheels with tyres whose ETRTO size falls within the 32/47-609/642 range. It fits various 28-inch tyre sizes, so the ETRTO marking on the tyre sidewall should be checked before installation.

This model is suitable for city, trekking, hybrid and touring bikes, provided the rim is compatible with an Auto valve. During fitting, the tube should not be twisted or pinched between the tyre and rim.

Additional Features
The butyl construction requires little maintenance and is well suited for everyday use. The tube can be used as a spare on rides or as a replacement for a worn or punctured tube.

Its compact packaging makes it easy to carry in a bicycle bag, backpack or repair kit. When correctly selected and inflated to the pressure recommended by the tyre manufacturer, the tube helps maintain reliable tyre performance both in the city and on longer trips.

Summary
Continental Tour 28" All Valve Auto 32/47-609/642 inner tube is made for 28-inch city, trekking, hybrid and touring bicycles with 32–47 mm wide tyres. It is best suited for cyclists who need a reliable butyl tube with a convenient Auto valve, good air retention and broad compatibility for everyday and touring routes.