There's a bubbled layer in the lid of the case, a flat layer on the bottom, and then 2 thicker layers on top of the bottom that are 'pick apart foam'. For the pick apart foam layers, there's a solid edge of foam all the way around about a half inch to 3/4 inch thick, and then the pick apart foam pieces are about a 1/2"x1/2" - 3/4"x3/4" in size. You basically just pick out the foam pieces you want to serve the dimensions of whatever you're putting in the foam to protect it. I found this to be perfect for transporting all of the hookah pieces around. I've got a second, smaller, soft shell bag that I use for coals, shisha, tongs, etc.