Finally a solution that works for the thinning on my front crown. I purchased long layers in a natural black, and it matches pretty well with my hair. The bio-base is amazing, and looks completely natural. It is small and lightweight enough that it is easy to put on and wear. The clips pull a bit, but I got a wig band that I wear underneath and clip it onto the band. It looks natural, and after trying multiple toppers and extensions, I am so happy to find one that works!