one-size-fits-all

/W AH1 N S AY0 Z F IH0 T S AO0 L/
adjective
  1. 1

    (of a garment) Designed to be worn with comfort by people with a wide range of sizes.

  2. 2

    Suitable for a wide range of tastes, opinions, situations, etc.

Source: https://en.wiktionary.org/wiki/one-size-fits-all