Let's assume you know exactly which size you want, but you want to see all styles where this size is available and not go into all products to see what's available. You can do this by using the FILTER on the All Caps page.
On desktop: You will see the filter options on the right side of the screen. Select your size and choose apply. The page should now be updated only with styles available in your requested size.
On smartphone: In the left corner, you should see the text FILTERS. Select this text, and the filter will reveal itself from the right side. Select your size and choose apply. The page should now be updated only with styles available in your requested size.
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size filter, find by size, search by size