The high quality glass food containers are designed to stack and nest neatly for compact storage, and are safe for use in the oven, microwave, air fryer, dishwasher and freezer. Each container is leak-proof and airtight to keep your food fresh for longer. This set includes one of each of the 4 sizes of container: 380ml, 600ml, 900ml, 1.2L. Features Nestable (different sizes) or stackable (same size) for easy storage. Dishwasher, oven, air fryer, freezer and microwave-safe. Compatible with stainless steel Meal Prep Boxes. Leak proof + airtight vacuum-sealed lid lock keeps food fresher for longer. High quality, durable borosilicate glass built to endure oven heat and daily wear. Easy-clean due to its fully removable seals. BPA-Free. Resistant to thermal shock up to 200°C. Specifications Includes: 4 x Stack + Nest Containers Extra Small: 380ml - 15.5cm × 11cm × 6.1cm - 334g Small: 600ml - 17.1cm × 12.6cm × 7.1cm - 456g Medium: 900ml - 18.7cm × 14.2cm × 7.8cm - 596g Large: 1.2L - 20.5cm × 15.8cm × 8.5cm - 736g Materials: Borosilicate Glass, Polypropylene, Silicone Maximum Temperature: 250°C Minimum Temperature: -20°C