Features Dual-Function FreeSip® spout with built-in straw for sipping and wide opening for chugging Push-button lid for one-handed open and close with secure locking mechanism Leak-proof design that seals tight to prevent spills on the go Double-wall vacuum insulated stainless steel keeps drinks cold for up to 24 hours Carry loop handle flips up for easy carrying Wide mouth opening makes it easy to fill with ice and clean BPA- and phthalate-free made from food-safe materials Dishwasher safe lid for easy cleaning (hand wash bottle recommended)