My favourite is this one: https://www.amazon.com/Dukal-900610-Reflections-Earloop-Pleated/dp/B07SYJBBS4 https://www.amazon.com/Dukal-900610-Reflections-Earloop-

My favourite is this one: https://www.amazon.com/Dukal-900610-Reflections-Earloop-Pleated/dp/B07SYJBBS4 https://www.amazon.com/Dukal-900610-Reflections-Earloop-Plea... $46 for 100 and the "newer" version is $170 for 50. If you look at the reason for this massive price jump: "high price caused by 1) price spike of non-woven fabrics, 20K up to 200K/ton, due to capacity issue caused by coronavirus. 2) till now, US custom will block or expropriate large quantity of mask, so we have to ship this product through small airmail package, which 5 time cost of logistic fee vs shipment in container"