Difference between Zzz Atelier Mattress Models?

Hi team, considering buying a Zzz Atelier mattress with the current 15% off promo. Does anyone have advice on the differences between their models?

• Option A: Single listed for $209

• Option B: Single listed for $179

Now the title of Option A makes it sound like the difference is the '7 Zone Pocket Springs' but the image and description of Option B states that it too has the '7 Zone Pocket Springs'. Images and description are close to identical as well.

Any advice would be greatly appreciated! Thanks in advance :)