M99 Pro & Neo are both as good as each other. Very comfortable to wear for long hours and still breath easily. Size of mask can cover the face without leaving any gaps. The filtration is highly effective. Bright color Mask can actually see a layer of grey film at the front after few hours of usage when in a crowded or dusty area. Medicos Keep Up the good work.
M99 Pro is the best!
My favourite mask! Easy to breathe, fits snugly & with 5 layers for maximum protection.