I only like to use cups with a cover (lid). Keeps the aromatics and heat in the drink, and keeps out dirt and bugs etc.
The Peak cover is so ridiculously loose, that if I hold it 1/4 of an inch above the cup it will drop right on all the way. Also, it fits inside, so you can't fill the cup.
Compare to my Evernew Ti double wall cup where the cover is very tight, could almost drop the cup without
This review was written in the old system and had content requirements that are different than reviews written today.