Charon, sorry this took a bit to get back to you, but I wanted to be sure we double checked our inventory incase what you said was possibly true. We pulled random products and found the same thing your wife found-- it seems slightly different but in fact the material is the same on both colors. This could be because the interior lining fleece on the blue vs the black feeling more "fleecy". This however doesn't mean it is made out of a different material as you found.

Hope this helps you a little. Let us know if you've got any other concerns or questions and thanks for choosing Henderson.