There is truly nothing in the small pet space like the Halo+Roam Combo. The Roam is the safest and highest quality small pet exercise ball on the market. It has 2 millimeter ventilation holes to prevent paw trapping along with increased ventilation and airflow. Additionally, the Roam’s lid has a two step locking mechanism, ensuring that your pet is safely fastened inside. The Halo is a unique small pet carrier that can be used in conjunction with the Roam. Insert the Roam into the Halo and your hamster is running in place. With both a carrying handle and magnetic kick-out stands, your small pet can exercise with you at home or on the go. Now for the first time, there is a safe way to walk your hamster. Give your small pet the life they deserve!