Bicycle wheels come in a wide range of sizes from 12" wheels found on smaller Kids Bikes to larger 29" Mountain Bike and 700c Road Bike wheels. Larger wheels are normally faster and more stable at speed and their larger contact patch improves grip too. Smaller wheels are normally lighter, more manoeuvrable and have quicker acceleration.
Wheel sizes are defined by the country that first popularised the style of bike that used them - so you'll see some imperial and some metric measurements listed. Wiggle includes the ISO standard in brackets after each for ease of comparison.
The People at Topeak spend a good part of their days listening to cyclists needs and figuring out new ways to make their riding experience more enjoyable. This is born out of a desire to make their products better and better. Made up of a close knit global team of engineers, designers, sales and marketing folks, the Topeak Team continually looks at new ways of approaching cycling and its special requirements... that’s because they are riders too.