Meaning of the word "Off the peg" in English

What does "Off the peg" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

Off the peg

US /ɔf ðə pɛɡ/
UK /ɒf ðə pɛɡ/

Adjective

(of clothes) made in standard sizes and not to order

Example:
He prefers to buy his suits off the peg rather than having them custom-made.
It's hard to find a dress that fits perfectly when you buy off the peg.