These revolutionary Blender Bottles feature a special new design! The sleek shakers each feature a cute winter animal and feature a specially developed loop handle to make them easy to transport. The shaker is also 100% leak-proof and is free of bisphenol A and plasticizers. Thanks to the specially selected plastic, the bottles are very durable. The bottles also feature a rounded base to make it easier for the mixer ball to reach all the corners of your shake.