Hello people at Planetary Design, Let me say first of all that I love your product. I’ve made and consumed a LOT of coffee from my 20 oz. Boot Cut. Secondly, I want to affirm that you make a durable product. In December on my way to work, I heard a thump and looked in my side view mirror to see if I’d hit something. I hadn’t, but I saw my Boot Cut coffee mug wheeling across the road, having tumbled from the rough of my pickup as I was driving about 35 mph. Aside from a scrape on the handle and some bending in the base, the mug came out just fine. I still use it everday. You make a damn fine product.