How’s the quality of the product?

One of the most irritating things about generic / cheap sleep masks is that they seem to fall apart after a few weeks. Either the elastics break. Or the threads start coming apart. Or the product gets deformed. Not only did we choose the highest quality materials for the Manta Cool Mask, but we also spent the extra effort to DOUBLE stitch all of the major components. The Manta COOL Mask is built to last (for years).