Ember Mug Lid

This is a simple add-on to a great product. The Ember coffee mug keeps coffee at the perfect temperature. This lid serves two purposes:If you step away from you desk you can place this lid on your mug to keep heat in and save battery power After you clean your mug this can serve as a dust cover while the mug sits empty on your deskhttps://ember.com/products/ember-mug-2