Review on Nalgene Easy Sipper - Designed Specifically For Your NALGENE 32 Oz Wide Mouth Bottle by Mike Steeg

I tried some cheaper ones before and they had a rubber taste I couldn't handle. These don't and I think are made out of derlin plastic but its just a guess. They do just snug fit but so did my nalgene 10 years ago when they used to come with them. That bottle also had a ridge for it to rest on. This bottle and guard have a thin ring it slightly clicks into place but I could force it all the way in easily but I don't plan on removing it except when I wash it. For me I just wanted something that left my water tasting like water and I am happy. Also I did receive 2 of them.