The room where I take my little 4 year old son to go climbing harnesses that do praised shorts. For safety issues (risk of tipping), comfort (better back support, adapted to the smaller size, ...), I was looking for a full body harness for children from 4 years. I have chosen this one i after consulting opinions on several sites and ordered it on Amazon for the price (quickly amortized over the lease) and the possibility to return it if it does not suit. This belt is well designed. It easily adjusts to any measurement of a 4 year old. It is safe and does not interfere with the toddler in his movements. Moreover, colors (red and orange bright blue) liked to my little son. A good buy.