Review on Adhesive Diameter Waterproof Suitable Classroom Sewing by Heather Shaw

I think the description is a bit misleading. It says "strong adhesive" and "good for sewing, arts and crafts," suggesting it will stick to fabric. It is not. We bought these to fill the gap between my son's curtains and the window frame to block the light. The glue will not stick to the curtain. The velcro stays together but the curtain falls to a point. Now I can see where at the end of the description it says it won't stick to "fluffy fabric" which is still not entirely true because my curtains don't lint in any way. It should be clearly stated that they do not work with any substance. I don't know how they can be useful for sewing.