Materials: High quality Stainless Steel lunch box with Silicone band. A 1 L/ 34 fl. oz. stainless steel lunch box that is the first one on the market due to having a secure vacuum-sealed closure. Oven and freezer safe. Includes Stainless Steel fork and adjustable internal divider. 100% leak proof. Plastic free. Hand wash. Packaged in Black+Blum retail gift box. Black+Blum are proud members of 1% for the planet and donate one percent of their total annual sales (including this item) to non-profit environmental causes.