Corelle Knox 12-piece Dinnerware Set. Knox uses repeating hexagons in muted shades of sage-grey to produce a stylish look. This eye-catching, beautiful design makes any occasion a special one. The extra-strength Vitrelle glass is eco-friendly, durable and space-saving, so it’s easy to live with and easy to love. Extra strength Vitrelle: our unique, triple-layer glass technology stands the test of time Eco-friendly: made from up to 80% pre-consumer recycled glass Durable and versatile: dishwasher, microwave, freezer and pre-heated oven (to 350° F) safe Space saving design: sleek, super lightweight and ultra-stackable Made in the USA: Crafted with pride in Corning, NY since 1970