What I love most about this lid, is that it keeps the liquid inside the hydroflask. Unless, unless you really really want to remove the liquid from the hydroflask, then you flip the lid and enjoy a rush of liquid pouring (not too fast, not too slow) from the uber-efficient wide-mouth of the hydroflask via the flip lid! The variety of colors is great, you can match the lids to your hydroflask, or you can get really whacky and mix it up, I know, crazy talk. It is possible, heck probable, that you will want to match your lid/hydroflask combo to your outfit or kit, I mean who would want to be seen with a mismatched hydration system, no one wants to bear that shame. Do yourself a favor and get steezy with the color combo, you wont regret it!
tl;dr - good for coffee