These are the official OnePlus 5 cases - Android Authority
DirectD - Online Store. ORIGINAL OnePlus 5 Silicone Protective Case Black
Reassurance Oneplus 5 Case - Cyankart.com
Spigen Neo Hybrid OnePlus 5 Case - Gunmetal
OnePlus 5 Thor Case - from the God of Thunder himself
Oneplus 5 smoke cover - BT Limited Edition Store
Best Cases for the OnePlus 5 | Android Central
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Luphie Sword OnePlus 5 Aluminium Bumper Case - Red
for 1+ OnePlus 5/5T/6/6T Battery Case Power Bank Portable Charger Cover 6500mAh | eBay
These are the official OnePlus 5 cases - Android Authority
Good Hand Feeling Oneplus 5 Case Cover Gray Matte Original Soft Back Cover Oneplus 5T Cover Black Capa Coque Funda One Plus 5 Case 1+5 | Wish