Made Of Stainless Steel. Powder Coated Finish. BevGuard™ Triple Insulation For Keeping Your Drink Cold Or Hot. Screw-On BevLock™ Tritan™ Leakproof Lid Seals It Tight To Prevent Spills And A Magnetic Closure To Keep Lid Open While You Sip. Double-Threaded Design Allows For Left Or Right-Handed Use. Non-Slip Base. No Condensation. Meets FDA Requirements. BPA Free.