【Safety Guarantee】--- Made of SUS 304 stainless steel, durable and resistant to shock and fall, the lid is made of premium rubber and BPA free, safe, environmentally friendly and non-toxic. You can use it safely. 【Leak-proof Sealing】--- The silicone lid fits perfectly with the cup body, preventing food from leaking out. It is airtight and effectively prevents air, dust or water from entering, thus extending the shelf life of the food inside. 【Convenient and Fast】--- The rubber lid is soft and easy to disassemble or install. This reusable storage container is lightweight and easy to store and carry, ideal for traveling. 【Excellent Storage】--- Ideal for holding ketchup, salad dressing, spices, jam and various condiments. It can perfectly preserve the flavor of the food inside the box, and is the perfect companion for condiments.