The Rockrider EXPL500 is a 26 inch wheel kids mountain bike aimed at riders around 9-12 years of age and between 135 and 150cm tall.
Featuring an aluminium frame and suspension fork at the front, the EXPL500 comes with a single chainring and 7 speed gearing using a thumbshifter to minimise complications (kids mountain bikes at this cheap a price usually have a lot more gears that are confusing to use and harder to maintain).
The bike is equipped with v-brakes and a set of tyres suitable for gentle off roading.
They’ve got a great video on the Decathlon website showing the types of fun you can have on these bikes.
The Rockrider EXPL500 really does represent value for money and would be a great way to get a child off road and muddy!