304 Stainless Steel interior, 201 Stainless Steel exterior. Polypropylene Plastic screw-on lid with handle. Double-wall vacuum insulated bottle. Powder coated finish. Designed for use with both hot and cold beverages. Includes Core 365® engraved logo in base of each bottle. Will keep liquids hot for up to 8 hours, cold for up to 18 hours. Do not microwave, do not place in freezer. Hand wash only. Fits MOST standard automobile cup holders* (Note we recommend sampling to verify it fits your car cup holder).
