A UK-based brand with a cult following among cycling parents. Geometry and components are purpose-built for small riders, and they hold resale value extremely well.
Islabikes is what serious cycling parents in the UK swear by — the geometry is dialed in for kids, not just scaled down from adult bikes. Buy secondhand to offset the cost and you'll barely lose money reselling.
“My favorite brands for a 4yr old for "all around" riding would be Islabikes or Woom or Spawn, followed by Frogg or Prevelo”