This mask is much more effective than paper masks, and it is lighter than the masks removable cartridge.
No big problem once and release the blocked straps. It also may serve me for biking, and even putting it 4 times a day, I did need to tighten it once a week. As a mask for cycling breathing is easier with special masks for cycling, odors are filtered better, it does not cause uted on the glasses.
The only negative is the price of this type of mask.
