I was really disappointed in the quality and fit of the neck gaiter. It was so loose on my neck that it defeats the purpose especially as i purchased it for cycling where im leaning forward on my bike. Its also too loose to stay up over my nose/face.
The material was also so thin and didnt look as advetised in the photos, its more transparent and the colors are dull. 
I still have some faith in their products even though Ive never used them but unfortunately they dont except exchanges, their suggested way around this is to give store credit. But then id pay $6 shipping twice. And if i return they take $5 for something like a restock fee, on top of the $6 shipping i paid. So my suggestion is only buy in person or knowing you already approve of the quality and fit.