DOUBLE-WALL VACUUM - Stainless steel insulated protein shaker keeps cold drinks up to 30+ hours cold and keeps hot drinks up to 8 hours warm. Temperature of cold beverages raise only 1.8 degree Fahrenheit per hour in a room temperature of 71 degrees Fahrenheit.
I purchased the Rose Colored Bottle and I am totally happy!! I have purchased a few bottles and this exceeds all of my expectations. Mixes and blends protein powder and almond milk perfectly. Keeps my drinks ice cold (the way I like it), and very easy to clean. I am a dialysis patient and bringing this air tight lid into the center also keeps my water safe from any contamination. The secure lid really makes a difference and will not pop open. It has to be twisted of, giving it an extra secure fit.