Custom Ad Sizes Now Available with Adsense

So I'm not exactly sure when Google Adsense made this new feature available. But I learned of it this past week that you can now make custom advertisement sizes. The option is located in the size list, just above the Link Ads group.

Custom Ad Size
Custom sized ad units may have a limited inventory of display ads available, which could have a negative impact on your earnings. If your site uses responsive design, we recommend that you use a responsive ad unit instead.
Click to expand…

I…
Custom Ad Sizes Now Available with Adsense

See original post by Americanbang