Smasrob Electronics Organizer Travel Case, Water Resistant Tech Bag Charger Pouch for Cord, Cable, Cards, Phone, Airpods, Gray

Thanks to everyone for their feedback. I appreciate it. My friend bought this case: https://a.co/d/01pDMxFi It's capable of storing the M21 plus many more of his gadgets/cables. I hope my friend will enjoy his new case. I also hope FIIO sees our discussion and brings the HS7 back! 👍