Miir vacuum insulated travel tumblers with press top sip lid.
BPA free, easy to clean, holds temperature well, and does good while doing it:
Every Miir product includes a 'Give Code' which is connected to a giving project. After purchasing, register the code on the base of your tumbler and see what project your purchase helped fund.
You can register your Give Code here.
The tumbler comes in two sizes: 8 oz. and 12 oz.
Note that the sip lid has an open sip hole, so this isn't a suitable travel tumbler for throwing in a bag to take on the go.