Gold's Gym 22oz BlenderBottle ProStak Shaker Bottle With Twist Lock Storage . Patented mixing system uses 316 surgical-grade stainless steel Blender Ball found only in BlenderBottle brand shaker cups. Patented loop top, ergonomic flip cap, and tapered spout. Includes 22 oz capacity (measurement markings to 16 oz) BlenderBottle, 150 cc jar, 100 cc jar, pill organizer and patented BlenderBall wire whisk. Interlocking jars can be used with or without the Bottle; expand capacity with additional jars sold separately. Top rack dishwasher safe, BPA-free, Phthalate-free.