Make a sustainable choice with Nayad™'s coffee ground eco-friendly line! Nayad™ Infinity 14 oz Coffee Grounds/Recycled Polypropylene Tumbler has an outer, removable sleeve, made of a new material of recycled coffee grounds and recycled polypropylene. The inner tumbler is made of 18/8 rust-free stainless steel construction, is double-wall insulated and copper-lined to keep beverage hot for up to 10 hours and cold for up to 20 hours. The wide-mouth lid is 100% BPA-free ABS plastic with silicone si