This microwavable steel food box set is lightweight, airtight and durable. It is perfect for meal prep, food storage, or simply eating on-the-go. It is also leak proof, dishwasher and oven-safe, and comes in a small, medium, and large size for breakfast, lunch, and everything in between. - Microwave-safe steel box + lid - Easy storage: boxes and lids are stackable - Leak proof + airtight vacuum-sealed lid lock keeps food fresher for longer and gives you peace of mind when eating on-the-go. - Dishwasher/Oven(exc. lid)/Freezer-safe. - Semi-transparent lid to see your meals clearly. - Easy-clean: fully removable seals. - High performance: lid lock vent means lid can stay on when microwaving which reduces heat time (compared with other stainless steel containers), and prevents splattering (no need for single-use cling film).