FEATURES ‧ Stainless Steel Straw included with a mid section bump so it won't fall out and make a mess. ‧ Cold for up to 6 hours. Vacuum Insulation. ‧ Material: Premium Food Grade 304 (18/8) Stainless Steel. ‧ BPA & Toxin Free. ‧ No Inside lining and toxic free inks. ‧ Cup holder friendly. ‧ 100% Recyclable Product & Packaging. ‧ Handwash tumbler. Dishwasher friendly lid. Freezing not recommended.