Double masking - using a N95 and a cloth mask - works better because it protects you and others. The N95 protects you, but many N95 masks have exhalation valve

Double masking - using a N95 and a cloth mask - works better because it protects you and others. The N95 protects you, but many N95 masks have exhalation valves that blast particles away and make it easier for you to breath. The cloth mask on top of the N95 protects others, by reduce the amount and distance of particles. This is especially true for N95 masks that have valves.