From the manufacturer
Tribest Glass Personal Blender, PBG-5001-A Glass Single Serving Vacuum Blender
The Tribest Glass Personal Blender PBG-5001 makes clean blending easy and portable. The stainless steel blade assembly and tempered glass containers ensure that there is zero food contact with plastic. There is zero worry about any plasticizers or harmful chemicals leaching into your favorite recipe while you store it or take it with you. The Variable Speed Dial gives you maximum control and the 1-Touch Pulse Button makes it easy for you to reach your desired texture. The Stainless Steel Blade Assembly comes apart for easy cleaning and is dishwasher safe. The PBG-5001 includes a 16 oz. and 42 oz. glass container to take care of all your on-the-go blending needs. The 42 oz. container has a vacuum lid so that you can blend in a vacuum for more flavor and nutrition. Please note: Mason jars cannot be used with the PBG-5050 or PBG-5001.