Great implementation. Seals well to the cup, helps keep the coffee at temp saving on battery. also, stops tipped cup from spilling and helps keep full cups from sloshing out while walking.
If you love your Ember mug, which I have for 2.5 years now - this lid is an absolute must. The battery doesn’t hold charge for my leisurely weekend morning coffee drinking unless I kept it on the charger which is impossible lounging on my couch or taking it from room to room while I pick up the house. However; the charge lasts forever with the lid! I am shocked at how much my coffee experience has improved. I refuse to drink coffee in another mug despite having the cutest mugs from all of my travels. I have been able to drink coffee in the car without the lid causing spillage and I even take it with me traveling in our travel trailer. It also makes me feel safer drinking near my young child as I won’t spill 140 degree coffee on her. This lid is a cheap addition to enhance your perfect temp coffee experience!
I recently received the sliding lid for my ember coffee cup. First I love the coffee cup and I also like the sliding lid. I think it does keep my coffee hot a little longer. I also like it because I often make my coffee and head upstairs and if the sliding lid is on i won’t spill it especially since I usually have a couple things in my hands. I also like the different color sliders
The lid does help with the heat retention and the mug lasts a little longer between charges. However the lid does leak a little. The seal around the lid could be better.