Made Of Stainless Steel. Powder Coated Finish. BevGuard™ Insulation For Keeping Your Drink Cold For 12 Hours. Screw-On, Thumb Slide, Spill Resistant Lid. Two-In-One MargTini Tumbler Designed To Mimic Margarita And Martini Glasses With A Slim Rim Ensuring Maximum Sippability With The Durability Of Double-Walled Steel. Splash-Proof Lid. Non-Slip Base. No Condensation. Meets FDA Requirements. BPA Free. Hand Wash Recommended.