Because our mats are shipped rolled, when you first open your mat, you may find that the edges are curled up on the side you wish to display. This is normal, and your mat should become flat after 48 hours or so. You can speed up the process by flipping it to the other side until it flattens or by rolling it the other way and re-attaching the velcro straps in that direction for 24 hours. If it has been over a week and your mat is still not lying flat, please reach out to us and we will help resolve the issue!