Review of BCF 4 in 1 Tumbler:

This has been my go-to travel mug since receiving it, double walled and keeps my coffee hot on the way to work and the tapered shell fits perfectly in my Caddy’s cup holder. BUT, it does have a design flaw, the flip top lid does not lock into the tab on the other side as it should (as stated in the description). Only knocking off one star because I’m a DIY’er and a little bit of filing in the shop on the tab and it works like a champ now. Haven’t tried the included adapter for cold ones but imagine that will come in handy when the weather calls for it!