This Lock & Lock Food Storage Container Rectangular 1.8 ltr is part of a wonderful range of food storage containers from lock and lock. Suitable for a range of uses this container is made from Polypropylene plastic making this food storage durable. The Lock and lock range of storage containers feature a wonderful locking system. The locking hooks of the wings on the lid lock securely with the slightly raised rim around the container. This provides equal pressure on all four sides of the hollow silicone seal creating an unique locking system that ensures air and water tightness. The containers are scientifically designed for stacking both upward and sideways to save space on the shelf.