ZANheadgear® Motley Tube® Gaiter Polyester Black Paisley

Does this stay over your ears securely? Planning on using it for bike commuting during winter.

Which neck/face gear would be best for nose and mouth dust protection in a hot weather?

Could you use this in hot weather conditions?

Is this warm enough for snowboarding? I'm also considering the fleece lined version but am not sure if it restricts your breathing too much...