Stainless steel, Tritan. Perfect for both hot and cold beverages. Holds ice for 30+ hours. Keeps drinks hot for up to 12 hours. Spill and leak-proof when closed. Removable Tritan straw. Internal measurement markings. Won't sweat and doesn't absorb odors. Fits into any standard sized cup holder. BPA-free. **CO2 Laser engraving is not available on Silver color**
