loved it [SEP] i bought this for a trip to burning man to help protect myself for the dust storms i loved this mask while i was out there its a comfortable mask i felt like i could wear it for hours without any problems the straps that fit behind the ears were great and soft when it was really dusty out there and i had this mark on i could tell i was not breathing in all of that dust i used it for a week out there and i could see some discoloration on the inside of the mask from all the dust i would use this product again