This is but one of the many fabric and textile shops found in Montmartre.
Quilters and sewers find their way to this section of Paris.
It is not glamorous but I have heard tales of great bargains.
Although the bolts of fabric seen here are covered at the pavement level,
I would be concerned about the splashes of cars and delivery vehicles as well as the intermittent rain seen in Paris.
11, rue d'Orsel