The Frog 55 has adjustable Tektro brakes, 8-speed Shimano easy-change thumb shifters and 8 speed cassette hub. Suitable for minimum inside leg of 55cm (around 6-7 years old), it has 20" wheels. The all-aluminium bike has a high quality frame, easily adjusted saddle height and a crank length of 114mm. Comes with 2 sets of Kenda tyres: a hybrid tyre and a more knobbly off-road tyre. Comes with a bell, reflectors and mudguards as standard. Free 5 year warranty available on the frame and forks, 2 years on all other parts.