Bests & Worsts Reviews from Amazon

The lids seem well made and the pack of 3 gives you options based on what you are drinking and where you are taking the bottle. The flip top was very tight and difficult to open, which I'm sure helps prevent leaks but makes me worried I would end up spilling just trying to get the top open. Unfortunately, they do NOT fit my 40oz wide mouth Hydrapeak bottle. The advertisement doesn't specify Hydrapeak, but someone in the customer questions replied that they did, so I ordered them. If you are looking for a lid for a Hydrapeak bottle, these are NOT the ones for you. I didn't have another brand to try it on, so I can't say if they do fit the ones they specify or not.