Introducing the Polar Duo - 945 ml Double-Wall Recycled Stainless Steel Tumbler with Storage Base, crafted from 304 stainless steel for both the outer and inner body, featuring a sleek matte finish. The lid includes a PP base, AS suction nozzle, and silicone components that ensure a secure fit and prevent leaks, along with a 304 stainless steel rivet. With double-wall vacuum insulation, it keeps drinks hot or cold for up to 12 hours. Designed with a handle for easy carrying, a lid with a straw for convenient sipping, and a screw-on bottom storage compartment ideal for pills or small essentials, this BPA-free, FDA-approved tumbler is perfect for everyday use.