Double wall steel insulation designed to maintain temperature for hours LEAK PROOF Compression sealing lid ensures a spill free system CUP HOLDER FRIENDLY Fits perfectly in all standard cup holders for on the go convenience QUALITY YOU CAN COUNT ON Durable stainless steel ready to withstand all life's daily chaos Product Features: 20oz Stainless Steel Tumblers Hot + cold for hours Spill proof suction Durable stainless steel Cup-holder friendly BPA free No metallic taste Join Our Hive Welcome to Make Z Bright - where laughs, cheers, and fun all tag along! We don't shy away from sipping and our joke-filled banter might be a bit spicy. But c'mon, why be serious when life's too short to be plain and PC? Enough chit-chat, let's talk about what you're really here for ~ our awesome drinkware! Our crew works tirelessly to print each pattern in our factory, so you know it's quality & fine-tuned. So raise your Make Z Bright tumbler to the sky, take a slurp, and let your laughter fly!