Made of stainless steel, powder coated finish on stainless steel material, Bevguard Insulation for keeping your drink cold for 24+ hours and hot for 6+ 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, durable and removable color-matched silicone body sleeve protects against drops, dents and dings, cup holder friendly, non-slip base, no condensation, no metallic taste, meets FDA requirements, BPA free, hand wash recommended.