29er mountain bikes
29ers - the common name for 29in wheel mountain bikes - have established themselves in market that has in the past been dominated by 26in wheeled machines.
29er proponents say big wheels offer more traction, comfort and confidence, which makes them attractive for both beginners and world cup riders. They're definitely here to stay.
BikeRadar will be examining the 29er phenomenon in terms of what it is and why it's happening, bikes the pros ride and bikes and kit we've reviewed.