My first concern was that I was sure it would have a chin strap - but it's not obvious from the picture or the description. It does and the straps are easily adjustable in two different ways to ensure that it fits well. Wearing a helmet is pointless unless it's fitted correctly, so firstly I used a piece of string to measure my sons head to ensure the the size was okay. His measurement is 54cm and it needed very little adjustment out of the box. Generally, fitting is very easy with the usual dial system at the back and as a safety bonus, it also has a light at the back which can be set to on or flashing, simply by pressing it.
My second concern was why is it called a "Gamer" helmet? Is it just for games and what games might require a helmet? Hunger games? It looks to me like any other bike helmet. It appears to be very strong and looks like it would resist a decent impact.
It's also very stylish (I got the black one). Most importantly, my son loves it which is good as it's sometimes difficult to convince kids of the need to wear a helmet.
Recommended.