How are the Pardo travel humidors, especially in terms of air tightness and durability?

They get good reviews on Amazon, but I'm always skeptical of possible fake reviews by a company or Amazon.

Looking at the 15 to 20 cigar case here:
https://www.amazon.com/gp/product/B0...MUV11AV3&psc=1

Thanks,
Sean

I friggin love cigars