Mongoose Girls's 27 5"tervane Mountain Bike In detail, featuring knobby surfaces makes the bike steady and non-slip on the road. Gears play a vital function in sustaining an appropriate pedaling velocity relying on the kinds of terrains. Thus, mountain bikes typically own a variety of gears created by twist shifters with a rear derailleur to deal with slopes or climb steep hills. There is a extensive range of wheel sizes for each model, like 650c, 26 inches. When it comes to tires, their width contributes to including extra off-road traction on unpaved trails. Mongoose presents a number of series of child bikes with varied varieties for every age. Besides the quality of durability and easy rides, they focus on safety for kids. They are sometimes outfitted with training wheels, chain guards, hand or coaster/foot brakes, fit sizes. Plus, light colours are utilized to those bikes for kids’ liking.