Tree-Free Greetings sg23290 Vintage Boulder Colorado Buffalo by Paul A. Lanquist Stainless Steel Sip 'N Go Travel Tumbler, 16-Ounce, Multicolored Premium quality 16 ounce travel tumbler for hot or cold beverages Stainless steel inner, comfortably curved acrylic outer BPA free and Proposition 65 compliant Hand wash only, not dishwasher safe Vintage Boulder Colorado Buffalo art by Paul A. Lanquist ("Pal")