A 12-in girls bike for ages 3 to 4 that is sized by inseam instead of guesswork: a 15.5 in to 17.5 in inseam and 31.5 in to 41.3 in standing height match the 17.5 in to 19.5 in saddle. The hand lever sits close to the grip so small fingers can actually squeeze it, and pedaling backward triggers the rear coaster brake, which is what most first-time riders reach for anyway. Mudguards keep puddle spray off clothes, front and rear reflectors catch headlights, and the bell warns walkers ahead. Cartoon mermaid graphics, colorful ribbons, and a removable storage basket finish the look.