Vacuum-insulated 18/8 stainless steel keeps drinks cold for hoursLeak-proof BPA-free straw lid when nozzle is closedCupholder friendly for 14–30 oz Summit sizes (not compatible for 32–84 oz)Top-rack dishwasher safe; wash lid in open positionGenerous 30 oz capacity provides all-day hydrationNot intended for hot or carbonated liquids to prevent pressure buildup
