The latest lid innovation does just what it says: it twists the lid to flip it open. You can also control the flow with the FlowSteady technology. The Hook on the back of the bottle is a carabiner clip compatible, so it can easily be secured on the outside of your bag for easy access. The lid snaps back in place so it is secure when sipping. It's the perfect way to brighten up your hydration._Stainless SteelDouble Wall Vacuum InsulatedBPA FreeLeakproofCupholder CompatibleDishwasher SafeKeeps drinks cool for 10 hoursDimensions: 80 x 80 x 260 mmCapacity: 710mlWeight: 350g