Silent Mixing Feature: the mixer net snaps into place and stays tight - no rattling or loose parts No Lumps: the integrated silent mixing net can take care of the thickest of powders - no lumps or clumps 100% Leak Proof: secure cap and lid ensure a 100% leak proof seal Smart Compartments: carry your powders, vitamins or supplements with this grab-and-go solution BPA-Free, Non-Toxic and Recyclable Plastic: safe for the environment and safe for you and is freezer, dishwasher and microwave Safe