Keeps Food Fresh: It is equipped with an airtight lid that has a snap locks and a silicone ring for an even tighter fit. This keeps food fresh for longer and prevents leakage. High-Quality, Durable Materials: The containers are made of thick, borosilicate glass, which is strong and durable. BPA-free, food safe polypropylene lid is odourless and prevents leakage. Meal Prep & Portion Control: Calculated meal sizes to help you feel full, yet stay fit and healthy. It's a good option for controlled diets. Each container measures 19 cm (l) x 13 cm (w) x 7 cm (h) and can hold 840ml / 28oz of hot or cold food. Food Safe & BPA Free: Borosilicate glass container is non-porous and won’t absorb food odours, flavours, or stains; Food will taste just as you prepared it! The lids are detachable, and the silicone seal is removable, making cleaning easy. Oven, Microwave, Dishwasher, Freezer & Air Fryer Safe: Glass part of the container is designed to withstand high and low temperatures (-20°C to +300°C), meaning you can reheat or cook your food directly in the oven. (Caution: remove the lid)