I learned about your product from a YouTube video on the ideal gerbil enclosure. I liked how the large wheels are good for their backs and does not cause them pain. The wheels themselves are gorgeous and so much better than the cheap plastic options. The flexible bridge was also suggested so I bought both products. The cage we inherited when we adopted the gerbils was too small so we added a full tub of burrowing materials for them so the original cage was more than large enough for your wheel. The flexi bridge was super helpful to allow the gerbils to move from their favorite tubes into their sand bath. I've since moved their cage around and the flexi bridge was easy to reposition to maximize space in the cage enclosure. I am thinking of getting a second one to go from the cage down to their nesting material. Both products are really high quality, I am very pleased. At first the gerbils ignored the wheel but I kept leaving little treats in it to encourage them to jump in. Two weeks later and I was sitting on the couch and saw the wheel spinning! They mostly use it at night but we have caught them on it several times each. It is also so quiet, unless you're looking, you wouldn't realize they were using it. They also love to hang out underneath the wheel on the platform, so that is a bonus space for them.
