or e·con·o·my-sized

  1. larger in size and costing less per unit of measurement than a smaller size: an economy-size box of soap flakes.
  2. smaller in size and costing less: economy-size cars.

Origin of economy-size

First recorded in 1945–50 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018