DURABLE AND SAFE MATERIALThe MAXBASE 40oz Insulated Tumbler is made of high-quality, food-grade 18/8 stainless steel, ensuring that your beverages maintain original flavour and are free from any unwanted odours. | SLIDABLE AND WATERPROOF LIDMAXBASE tumbler comes with a leak-proof lid that is designed to prevent spilling or leaking, making it perfect for use on the go. The lid features silicone sealing ring and sliding mechanism, ensuring air tightness while allowing for easy opening and closing of the spout. | COMPLETE ACCESSORIESThe straws of the MAXBASE 40 oz tumbler are perfectly designed to fit the tumbler lid, stainless steel straw has 2 silicone tip to protect your tumbler and lips. The cleaning brush can make it easy to clean the straw. |