Using a premium quality Hybrid Shell construction the Merker Ampire helmet is light, comfortable and durable. The RTS Fit System means that it adjusts to your head shape in one simple step. The MarkAIR channel system with 2, position climate control, in combination with Xdry performance lining, ensures optimal temperature regulation. This works even with gloves on and while riding! Move the slider to control the air volume to match your own personal warmth preference.