I have 2 Dachshunds that of course love to burrow.  This bed was quite a find!  They have loved it from the day we got it.
I got the medium size that was 36" in diameter.  There's plenty of room for both of them at the same time.  The insert comes out for washing.  It's a nice quality micro suede cover with the lambs wool inner lining.  I would thoroughly recommend it!
Wayfair also shipped incredibly fast!