I purchased these for my 3 1/2 year old son.  I bought them a little larger than normal after looking at the sizing chart on Columbia's website.  My son has been wearing these shoes for 6 months now and there is no discernable wear.  He can jump in puddles since they are water resistant, and when he is at the playground they are have very good grip on the soles for lots of running and climbing.  They are cool and comfortable, and he can easily put them on himself.  I will definitely buy the next size up when he outgrows them.