You know those wonderful soft squooshy socks they have now? Like these?
Exhibit A: artist's feet in delightfully cuddly socks
These are made of some magic knit material that feels like your feet are wrapped in clouds.
Why don’t they make entire sets of clothes out of the same stuff?
I want some soft squooshy pajamas.
Exiled Stardust 
Soft, yes, but they aren’t always made with breathable material. At least my favorite squooshy, pink-striped pair aren’t. Do yours have little grippers on the soles? I love that because I slipped in my previous pair. :c}
Some of mine have those, but I don’t really like them. It’s like walking on little rubber pebbles. I always wear slippers, so I don’t slip.