Ridgeback Harmony Ridgeback use the same contstruction techniques & light weight 6061 heat treated aluminium for thei kids bikes that they use for their renowned adult bikes, so you can always rely on lighter weight & greater durability than most other kids bikes. In other words, these are bicycles designed for kids, not toys that look like bikes. The Harmony is Ridgeback's 20 inch wheeled bike for girls of roughly 5 to 8 years old, although with children's bikes sizing depends on the individual as a tall 6 year old might be bigger than a petite 8 year old. Luckily Ridgeback have finished the Harmony in an attractive but not too girly metallic silver with minimal pink decals, so it should appeal to both ends of the possible age range that it fits. 6 speed gearing & off road type tyres give the Harmony versatility for multi-terrain riding, & the componentsa are chosen for easy maintenance &, above all, adjustability, so the bike can be tweaked to grow with the rider over time & even the brake levers can be adjusted to suit different sized hands.