Use 'off the rack' when you buy standard items without any alterations or customization.

Casual Shopping

'Off the rack' suggests a quick purchase, unlike tailor-made which takes longer.

Time Saver

Items 'off the rack' are made in common sizes and may not fit perfectly.

Describing an 'off the rack' item implies it fits without needing changes.

'Off the rack' items are usually more affordable than made-to-order ones.

Items 'off the rack' follow current trends and common styles, rather than being unique.