[Eye-opening] How to use extension hooks

Haven't you ever had a situation like this?

When you think about buying the bra you've been eyeing on a sale or point-up day,

(...My size is sold out!)
...Isn't that the case?

An extension hook is a reliable ally in such situations.
Just having one of these handy items will increase the options for bra sizes you can choose from.

How to choose an extension hook

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① Increase your cup size by one size from your usual size. ② Subtract 5cm from your underbust.

<Example>
If you normally wear a C70, you can wear a D65 bra with an extension hook to your usual size!