Perfect i work in the freezer so they are just right for that type of work i use these as dust mask when i sand and they are just thick enough to give you decent protection but not so thick that they are hot or hard to breath in so i wear it which means its a 1000 better than the expensive mask i have in the cabinet and dont wear because its hot and hard to breath in sooooo i got these skull masks for my husband and i to wear when we go out on the motorcycle