Felt is a flexible material therefore the slippers will soon adapt to the shape of your feet. After wearing them for a few days they will just slip cosily on to your feet.
Slippers are made of the finest 100% wool felt (merino sheep wool).
When they get dusty, remove the dust using a vacuum cleaner or adhesive tape.
Never brush them because the fabric might pill or even tear.
The slippers can be washed in the washing machine at 30°C (wool program!) using a very gentle soap for wool. Before washing, remove any dust using a vacuum cleaner. Because wool might shrink a little, after washing put wet slippers on your feet so they reshape to your feet. Then take them off and let them dry. To keep the shape you can also stuff a soft plastic bag into them. After they have been washed the slippers might get a bit smaller.
If you wash the slippers by hand DO NOT use a brush on any art of the slipper!
If the outer edges start pilling, cut the pills with scissors.