For preschool use
I used to have a Berkeley, but since it was getting small, I bought a new one. The size feels just right for kids in early elementary school and has a design that rivals adults, so when I recommended it to my son, he liked it and I purchased it.
It's very easy to use and I highly recommend it. My son is a petite boy at 110cm, but he wears it stylishly to preschool every day.