How we measure
What the numbers on these pages mean, how they were taken, and the ones you should ignore.
Age ranges
An age range is a rough band drawn from stand-over height and typical leg strength. It is the weakest number on any spec sheet and we would remove it if people did not ask for it. Two children of the same age can differ by four inches of inseam, which is more than the entire adjustment range of some seats.
Weight limits
The maximum rider weight is a structural figure for the frame and seat together. It is not a target and it is not a size guide. A rider can hit the stand-over limit of a frame long before they approach the weight limit, and in practice that is the way it usually goes.
Seat heights and stand-over
Seat height is measured from the floor to the top of the seat at its lowest setting, with the wheels the bike ships with. Compare that number to the rider's inseam, not to their height. Stand-over is the clearance when the rider is standing flat-footed over the frame, and it is the number that eventually tells you the bike is finished.
Frame weight
Weighed as shipped, without packaging and with every part fitted. Where a frame converts — pedals on or off, handle on or off — we quote the heavier configuration, because that is the one someone will have to carry up a step.
Ratings and reviews
Star ratings and review counts shown on these pages come from the live product listings and are refreshed when we rebuild the site. Quoted reviews are reproduced as they were written, trimmed only for length. Where several colors share a single listing, the rating and the quotes belong to the whole line rather than to one color, and we say so on the page.
Prices
Prices on these pages are read from the listing at build time and can move at any hour. Treat them as a snapshot — the figure on the listing itself is the one that counts.