Rolson Indoor Bicycle Trainer Train safely on your bike away from the elements and busy roads with this indoor trainer. Simply set up the trainer by attaching it to the hub on your bike wheel and you can get cycling. It's designed with a wide base and non-slip grips for extra stability and magnetic resistance to simulate road conditions. Suitable for 26-27” and 700C tyres Magnetic resistance Dimensions: H57.5 x W49 x D21cm