plastic-free, Reusable, and leak-proof, the Seal Cup collection from ECOlunchbox is a versatile assortment of food storage containers that are inspired by the ocean with their uniquely designed lids. Each stainless steel container is dishwasher safe, comes with a silicone lid, and is perfect for packing meals and snacks to-go. The various sizes nest within eachother to save storage space and can hold all types of food from dips and dressings to bagels and berries.