Dont make the same mistake I did. Quick taps to my ears and it does all that I need. The noise cancellation is amazing, but my overall experience is that there is a lot of room for improvement. Wenn mansie vorher etwas klein knetet gehen sie in den Ohren auf und passen sich perfekt an und dichten nach außen ab. Should be 2400 lumens. Perfect weather for them right now. As soon as I slip my feet into them they start to feel warm. They were easy to assemble, and I used Gorilla brand cyanoacrylate glue to stick them together. Having got the right size I really love this corset! Even fully extended (with some sag) the poles can withstand some serious weight put on them.