Here's the perfect travel thermos flask.
The Zojirushi Tuff Boy, unbreakable stainless steel vacuum bottle.
The new innovative design makes it lighter and more compact than other bottles of the same 2 liter capacity. (68 ozs.) It has a wide mouth design for easy cleaning and added versatility, such as accommodating full size ice cubes. It has a comfortable rubber retractable handle and also and adjustable shoulder strap. The pour thru stopper is of an advanced leak-proof design that locks tight. (You know, when it's closed.)
The interior is an easy to clean non-stick finish over steel that eliminates flavor cross-over from one liquid to the next. The lid conveniently turns into a cup, and comes with an extra inner cup to share with friends. This high quality flask has an amazing thermal rating. With a starting temperature of 203 degrees, coffee kept inside for 6 hours, will still be 177 degrees, and if kept for 24 hours, will still be a drinkable 143 degrees. WOW!... what thermal retention!
It comes with a 5 year warranty from Zojirushi; ships in a gift box; made in Thailand. 4 1/2 inch diameter without handle x 12 7/8 inch tall.
Remember, Zojirushi invented the steel vacuum insulated flask bottle, and has stayed ahead of the rest on the cutting edge of design.