From my experience I have two problems with skinny jeans:

1. When I buy the ones with stretch built in they eventually stretch out too much around the knees & get baggy
2. They tend to slide up out of my boots when I cross my legs & get baggy that way.

This product WILL help with #2 but it does NOT do much for #1 so depending on your problem with your skinny jeans will depend on whether this product will help you.  I have not had any problem with the size & comfort though, you don't even feel them on & since almost the entire strap is velcro, there is not problem making it big or small enough for just about anyone.