OPEN STOCK-Manufactured in the USA in our Springfield TN facility. Tumbler is made of Plastic that is known for strength and clarity. Other Plastics become foggy and dull over time. Our Plastic will remain clear and vibrant. This Tumbler will not break, crack, or chip. Coordinating Lid included and has a secure snap fit. Light and easy to carry. Take on a hike, to a barbeque, or carry to the office with ease. Double Wall insulation will help keep your cold drinks, colder and hot drinks, hotter. Tumbler is dishwasher and microwave safe allowing you to make that smoothie or protein shake ahead of time. Tumbler can go straight from the freezer to the microwave.