Lock & Lock's clever patented system uses four individual locking hinges and a silicone seal to make them 100% air and watertight. Perfect for storing food in the fridge or freezer or transporting between home and work. A large range of styles and sizes are available to choose from. Capacity: 700ml. Dimensions: 101mm x 118mm. BPA free. Freezer & dishwasher safe. Microwave safe (reheating only).