For running, hiking, skiing, cycling. The RaidLight Mask Mountain can easily be worn around the neck and quickly pulled up and secured on the nose. Many races now ask for a mask as part of the mandatory equipment, having to be used at start, finish, feed stations etc. It's also perfect for other sports like cycling when you stop to go into a shop, or skiing for chairlift queues.
The Mountain Mask is classified category 2, a decree of the French government of 21/01/2021 recommends not to use Category 2 masks anymore. The Mountain Mask Category 2 is therefore no longer compliant with French recommendations since 21/01/2021.