I picked up the Otterbox Theorem Series case for the Surface Duo to protect it while traveling. The Ottherbox Theorem case looks great but has some downfalls after using it... The case doesn't really work very well with a stylus, even though it has a stylus holder built right on the flap. It actually keeps the flap from closing if you put a stylus. The Otterbox Theorem looks very elegant and gives your Microsoft Surface Duo that extra high class look, but inside it is made of plastic that doesn't look or feel high quality. The Otterbox Theorem Series is on the expensive side, you might want to shop around if you pick up the case for your Microsoft Surface Duo. It does have a sticky surface inside that holds your Surface Duo which keeps it from sliding out. But if you happen to have a skin protector on the outside of the Surface Duo, it might peel it off with the adhesive of the case to keep the Surface Duo from sliding out of the case. Inside there are two slots for credit cards or you could put your driver's license in the slot as well. Overall the case looks great but it only holds from one side and the rest is loose so I will be passing on this case.
Otterbox Theorem Series Case: https://www.otterbox.com/en-us/microsoft-surface-duo/theorem-series-case/77-80500.html#q=surface%2Bduo&lang=default&start=1
