During my research I noted it is better on your back with any aneros massage aneros toy…and the toy does not need to be fully inserted…. And lube goes a long way.
I found new wonderful sensations if I let the base sit on the bed and let the toy slide in/out with hip motion and angle…also with pelvic floor squeezes and various contractions. The syn models feel better at this as well for me. Leaving it fully inserted was fun but this new way brings me pleasure quicker.
The top inch or two will massage the rectum causing pleasure.