multisize

/ˈmʌltiˌsaɪz/
adjective
  1. Available in or designed to fit multiple sizes.
    • The store sells multisize frames that can hold photos from 4x6 to 8x10 inches.
    • She bought a multisize backpack with adjustable straps to fit both children and adults.
    • The multisize shoe inserts can be trimmed to fit different shoe sizes.