[This review was collected as part of a promotion.] Ergodyne's hardhat liners have become essential winter gear for me. I like them much more than balaclavas or gaiters, as their design lets me don and doff the liner without having to smush my curly hair down on my forehead or wad my very long beard into the shape of an electrified possum. That, and they keep my head warm. I also like that the mouthpieces are removeable, in case you don't feel like the weather requires full-face covering. One improvement I would like to see is replacing the velcro strip used to hold the mouthpieces on with a larger triangular panel that reaches all the way to the face opening, or extending the wings on the mouthpieces. Some faces are larger than others, and the mouthpieces could use a little larger surface area to grab hold of. The 6867 is three layers of polyester construction, so I would not wear it when performing hot work of any kind, as excessive heat or sparks/splatter might melt it to your noggin'. For standard work, however, it should perform well. I even use them at my home shop without a hardhat.