The velcro straps are taking a bit for me to get accustomed to- a little difficult to take mask off & on, but great if putting it on & wearing for long periods. The straps are awkward to adjust when mask is on, because the velcro strip is long (makes it fit wide range of sizes & it's hard to get the two sides together evenly.) The mask construction is unusual, with black fabric extensions above & below the lovely woven fabric, (also lighter than the main body of the mask) but I adjusted quickl...