Meet the Genicook 8-piece rectangle cool lock container set, your pathway to an efficient, modern kitchen. The set includes 4 dark gray containers 13oz, 22oz, 36oz, 51oz with matching vented lids, a boon for microwave use- just slide to vent and prevent overcooking. Made with durable borosilicate glass, they resist temperature changes and won't warp or crack, replacing plastic for a healthier, choice. Microwave, freezer, fridge, and dishwasher safe, these elegant containers suit all your food storage needs, ensuring fresh, evenly heated meals.