off-the-shelf
1. [ adjective ] (especially of clothing) made in standard sizes and available from merchandise in stock
Synonyms: off-the-rack ready-to-wear off-the-peg
Examples:

"a ready-made jacket" "ready-to-wear clothes"

Related terms: ready-made
2. [ adjective ] (of clothing) "a ready-made jacket"
Synonyms: ready-to-wear off-the-rack
Examples:

"ready-to-wear clothes"

Related terms: ready-made
Similar spelling:   off-the-cuff
  off-the-shoulder
  off-the-clock