-
Islabike or Frog. Get the smallest they do, he'll out grow it quickly but he'll learn quicker on a bike that is the right kind of size for him.
The Islabike will retain most of it's value so your friend will be able to recoup 75% of the original outlay later, assuming it remains in good condition. Frog are relatively new but have a similar build quality to Islabikes, but as yet it's not clear if they retain that resale value.
My friend has asked me which child's bike she should buy for her 3 year old son.
Any ideas?