The Vitamix - 0.6L cup + blade base for A2500/A3500 is a useful to go cup that you can use with your Vitamix A2500 or A3500. The mixing cup is equipped with a lid. When your smoothie is done, you can put the lid on the cup and hit the road. That saves you time and doing the dishes. On top of that, this set contains an extra blade for your blender.