As my old helmet was already 5 years old I decided to replace it with a new one. Opinions on when to replace your helmet by a new one are not very consistent. Anyway, I came across a great offer at one of my favourite bike shops and decided to buy the Giro Pneumo helmet. It fits great and contains a lot of air.
Giro has 1 international manual for its helmets. Please find it below in PDF.