Be careful with the size: I recommend measuring your head with a tailor’s tape measure and choosing according to the size chart (or measuring if there are official Helikon dealers in your city). For me, it's 61cm, that's XL, although I’m not a large person. Different models may fit differently, so check the chart carefully and measure your head. This is already my third boonie hat, very cool. There’s ventilation, quality tailoring, and it's durable. It's best to watch the official video. It folds into a pocket, and there’s an orange fabric inside so you can signal in the 'greenery' and avoid losing it.