Do Cigar Tubes Keep Cigars Fresh?

The short answer is NO. Cigar tubes were designed for marketing purposes and presentation and NOT long term storage.

A glass or metal cigar tube cannot control humidity. If it is sealed with wax, it will preserve whatever humidity is inside the tube for a while but not months. It will slowly dry out. The cigar will absorb the humidity slowly until very little is left.

This is why humidors require a humidity pack. After a while these packs dry out and must be replaced.