Tree-Free Greetings SG25018 I Heart Boxers Sip 'N Go Stainless Lined Travel Tumbler, 16-Ounce Premium quality 16-ounce travel tumbler for hot or cold beverages Stainless steel inner, comfortably curved acrylic outer BPA free and proposition 65 compliant Handwash only, not dishwasher safe Great for Boxer lovers!