Description The Nalgene Wide Mouth Easy Sipper snaps into your Loop-Top bottle to control spills and splashes. While the wide mouth of your Nalgene is super handy for refilling & pouring it can be tricky not to spill. And that’s why the Easy Sipper is here. No more pouring water down your shirt when you’re quickly gulping from your Nalgene! This sipper accessory is compatible with the 1L & 1.5L wide mouth water bottles. It is 63mm diameter. Available in a few different colourways including Blue, Baby Pink, Yellow, White & Black.