Stock is constantly changing. Please be sure to contact us with stock before ordering. (2018 Catalog Product) The lid has a silicone seal built into the lid for excellent sealing properties. The transparent lid allows you to see the contents of your body and can be stacked. Material: Body: Polypropylene, Lid: AS, Gasket: Silicone rubber, Clasp: Stainless steel. Manufacturer: Chimpla Kogyo.