This is a great case made specifically for the now discontinued Steam Controller, but also fits the Xbox One S controller. It holds it in place to keep it from moving, with pockets to securely store the key, its extension cord, and a spare pair of AA batteries. It's also made so you don't accidentally press the center button and turn it on. Some people have trouble with the key not staying in place. You really have to push it in to lock it, side to side, not all at once. There may be…