Review on Nalgene Easy Sipper: Optimized For 32 Oz Wide Mouth Bottle by Wendy Washington

This is exactly what I wanted, and it works perfectly.I wanted to use my large water bottle without needing to be so careful (or else get a mess!). This fits perfectly: just don't push it down too far or else it drops, but I'd rather be a little bit careful when I insert the sipper than not be able to get it out easily. I add a powder to my water, and I find I can still pour it in the hole and fill with water without taking the insert out.