New and Improved BulletShaker 2.0 Best 25.36oz (750mL) Thermos to Keep Bulletproof Coffee HOT or Protein Shakes COLD..AND MIXED. (Mixer Ball Included!) Tired of Carrying your Mixed Bulletproof Coffee in a Blender Bottle where it gets Cold? Finally...The BulletShaker keeps Coffee Mixed, Frothy, and HOT! Not only will it Keep your Coffee, Butter, MCT Oil, Coconut Oil, mixed and Hot... It will even keep your Milk and Protein Powder Ice COLD and Mixed! Only Thermos on the Market with a Mixing Ball inside! Keeps Ice and Heat for over 24 Hours! Compare it to your Yeti! Also includes a FREE Canvas Carrying Case to Take On the Go! 100% NO LEAK GUARANTEE or your money back!! Most reviews are from a previous generation BulletShaker