I'm glad you are adding them. I have quite a merlot capsule myself and would pounce on these booties but I have learned that if a shoe fits your foot it will most certainly NOT fit mine. Team high volume feet here.
ETA: if anyone sees a merlot, burgundy or plum bootie / boot with a low 1-2" heel, that would work on a high volume foot, let me know. Classic Docs work on my feet for reference. And all Birkenstocks the B and D width both (size down in the D width).