Our 32 Oz Wide Mouth Bottled Straw Lidis Is Made of Professional Grade Stainless Steel with Wider Opening, Which Can Moisturize and Sip Easily All Day Long. We Can't Think of a Bottle Worth Refreshing, So We Have Improved the Outline and Simplified Design without Affecting a Degree of Performance. Our Colored Powder Coat Is Dishwasher Safe and More Convenient. Keep Cold for 24 Hours, Keep Hot for 12 Hours-as Usual.