If you have been wanting a full case, similar to the old Apple SmartCase, for your 10.5" iPad Pro, then checkout this JETech case. It offers full front and back scratch protection. Keep those scratches to a minimum!
A few thoughts: It does NOT add any bulk to the iPad, it still feels just as thin and light as it does without the case. While it doesn't offer the most protection for the iPad Pro, it offers enough if you take good care of your iPad. The Sleep/Wake function works perfectly.