High quality & durable - polypropylene (pp) plastics are sturdy and resistant to weakening over repeated useEasy to use - use with any powders - most often used for protein shakes, meal replacements, and smoothie recipesComfort - the gripper bars on the sides will allow you to easily grip the bottle and shake without droppingRecyclable - bpa free - ABS food grade pp plastic materialWithe handle on the lid ,available in two sizes.