Wouldnt have it any other way ever again awesome color works great hydro flask power i have two of these wide mouth flip lids for my hydro flask bottles a 32oz and a 40oz

Im not sure how the manufacturing can cause variances that are so wide across the spectrum as to cause some users to experience massive leakage as well as changes in the bottles capabilities of keeping the contents insulated to working perfectly and as advertised for others but i have zero issues with both of my lids

I mainly use my bottles for having water on hand in the office so my bottles are never tipped over on their sides and they arent facing extreme heat of the outdoors

I bought and used the flip lids with both hydro flask bottles from day 1 so i have zero experience with the original twist caps but i typically fill the bottom third of my bottles regardless of size other than that i have never had the lids leak from the rubber seals or even from the small air hole or from the main drinking hole when the lid is shut