Corelle’s Vitrelle glass is laminated in three thin layers rather than fired as a single thick slab, which is why the plates are so much lighter than they look. A 15-year owner on r/BuyItForLife reports the set surviving constant dishwasher cycles, several apartment moves, and the occasional drop onto tile with no chipping or crazing — the kind of longevity that’s rare in dinnerware at any price.