Made Of Stainless Steel  | Power Coated Finish  | BevGuard™ Insulation For Keeping Your Drink Cold For 24+ Hours And Hot For 4+ Hours | Screw On, BevLock™ Spill-Resistant Lid With MagFlip™ Technology To Keep Your Lid Open While You Sip | 100% Leakproof When Locked | Easy On & Off OctaLock™ Threading System With 8 Different Drinking Positions | Non-Slip Base  | No Condensation | No Metallic Taste  | Meets FDA Requirements | BPA Free  | Hand Wash Recommended