Contigo Shake & Go FIT with storage container Contigo has been working intensively on the Shake & Go FIT drinking mug. The new version is made of odor and taste resistant TritanTM for a crystal-clear, wear resistant mug. A strong screw cap allows shaking without any leaks. The special shaking ball and the round bottom design allows for drinks to be mixed better without lumps. This shaker with measure marking is ideal for mixing sports drinks to take with you. The bottom of the shaker contains a Removable Storage Compartment to store protein powder. The drinking mug is available in a 650 ml size, and has a large opening for easy filling. - 100 % leak proof. Rounder bottom and shaker ball wo