Folding children's mountain bikes 18/20/22/24 inch for boys and girls

These folding children's mountain bikes come in four wheel sizes—18, 20, 22, and 24 inches—making them suited to kids at different stages of growth. Built with a steel frame and fork, they're durable enough to handle the knocks of regular riding. The bikes fold down for easier transport and storage, which makes them practical if you need to fit them in a car or store them in a small space at home. They're designed for both boys and girls, so there's no fussing about frame geometry.

The flat bar handlebar and front suspension fork give a comfortable, upright riding position typical of entry-level mountain bikes. The suspension absorbs bumps from rough ground and loose surfaces, making the ride smoother and more confidence-inspiring for younger riders still developing their bike handling. Braking uses V-brakes, which are straightforward to maintain and give reliable stopping power across the range of wheel sizes. The aluminium rims help keep weight down without sacrificing durability.

Gear changes work via a 1-speed grip shifter combined with derailleur gears, which keeps the system simple while still giving options for different terrain. The adjustable seat means each bike can grow with a child for a couple of seasons before needing to move up to the next size. The single-speed setup makes the bikes easier to learn on without the complication of managing multiple gears, though it does mean steeper hills require more pedalling effort. These bikes handle casual riding, park exploration, and family outings where portability matters. They're straightforward to live with and easy to service if something wears out.