OtterBox Defender Series Pro Case for 11" Apple iPad Pro (1st to 4th Gen) - Black
Amazon
OtterBox Defender Case for iPad Pro 11" (1st gen/2nd gen/3rd gen/4th gen), Shockproof, Ultra-Rugged Protective Case with Built in Screen Protector, 2X Tested to Military Standard, Black
Adorama
OtterBox Defender Series Pro Case for iPad Pro 11" 1st to 4th Gen, Black