The contours for the palm were perfect, not like the studs of another brand I tried which I ended up not using because my grip and gameplay doesnt require palm gripping. In addition, the speakers are made of aluminum. Love❤️ The glue gunk gets pushed out of the cavity by the shifting of the pad and gums up the bottom of the mouse and my hand. I even tried again after letting them charge for 3 hours. First of all, I was immediately disappointed with these because I wear a size 7 shoe and I ordered the 6. So Id say, based on that, they are worthy of 5 stars. Literally feels like I’m walking on clouds. I love these slip on shoes. Like bass for example.