The shaker is made of food grade plastic (compliant with food safety law ISO22000:2005), without bisphenol (BPA), without plasticizers. A particularly wide cap thread and a special cap design guarantee that the liquid will not leak out (for 2 hours when the shaker is in a horizontal position). It is not intended for the preparation of drinks with a temperature above 40°C, as well as carbonated drinks. Otherwise, a shake deformation and/or liquid leakage may occur. A quick measuring scale makes it easier to control the amount of liquid (both for athletes and coaches).