Nothing is better than a BUCKED UP perfect shaker bottle! This is a genuine Perfect Shaker with 100% Leak Free, Guaranteed. It is BPA Free and Dishwasher Safe as well! We have also used a UV Extralast Ink so your logo never wears off! Also, introduces the ActionRod technology that is patented with this shaker which provides an explosive impact that results in instant emulsification and perfectly blended drinks!