This is Crackle from the Lunar Footwear Collection.
The Crackle is a trickster - What you see and what you feel is different.
The patterned upper on this mule slipper gives the illusion of pom poms and a knitted upper but is in fact a soft luxurious textile that has been used along with fleece trims to hold the heat and a padded insole to allow for more comfort. 
Crackle is machine washable and should be washed in a pillowcase and at 30 degrees and allow to dry naturally. Do not tumble dry or force dry and this will misshape the slipper and damage the textile upper.

Upper: Textile
Lining: Soft Fleece
Sole: Rubber
Heel Height: 3.5cm