Look cool and stand tall with the most extreme tyres around! Turn Ollie into an off-road machine and monster all terrain. Made from a soft but durable silicone compound which gives unbeatable grip both on and off road. Simple push on fit, easy to clean and superior quality. These Monster tyres are fully compatible with all Sphero Ollie products. Available in 5 unique colours - Red, Black, Blue, Green and Pink. Please Note - 1 pair of tyres included, Ollie and hubs sold separately.