All four shelves remove easily when assembled, and the sides are hinged so the can fold flat. I edited those parts out of the book so my boys could read it. It works best when you apply it to a slightly damp surface. They stay snugly in place and are comfortable enough to wear for extended calls or gaming sessions. Rigid. It features a great cast of Soap opera royalty from all of my favorite shows. Crocs have also been the glue that has bonded me and one my best friends. I was gonna leave a review before but I only remembered after seeing the coupon I saved from order and now want one again. And this color is amazing! I have had plantar problems my whole adult life.