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.
Geax's mission is to create the best mountain bike tyres you may desire for either XC, Free-Ride or Downhill applications.
They know it's not easy, but easy things are not their business. From year to year they have refined their weapons, using only the best raw materials and the most advanced 3D designing softwares. They have kept passing their prototypes to the best racers for testing: who trashed their tyres all over the world, from the Australian desert to the Alps, not forgetting Alaska and the Rocky Mountains.
Everybody can now see the results: a family of tyres growing every year with new treads and new technologies, constantly evolving.