Stainless Steel Vacuum Flask Bottle - 500ml

【PREMIUM Material】The inner wall is made of 304 grade food grade stainless steel and the outer case is made of high quality 304 stainless steel.They also have the silicone bottom which is designed to prevent them from sliding and spilling. Other parts of these Travel mugs are made of BPA-free PP materials ,food grade contact silica gels and 100% Co-polyester plastic that make them Safe and Healthy to use. 【KEEP TEMPERATURE】Featured dual walls, premium coated copper on the exterior of the inner wall. High performance temperature retention, keep liquid hot up to 12 hrs and cold up to 12 hrs.