We stay covered on the mountain with the Anon Hellbrook Balaclava. Featuring a soft and warm synthetic fabric, the Hellbrook Balaclava keeps you comfortable and warm from changing conditions and the blowing wind. The MFI interface allows us to seamlessly connect our Anon MFI goggles via integrated agents so we can have a gap-free fit. Plus, the MFI interface is removable if we are wearing the Hellbrook Balaclava without Anon goggles.