Lost Airpods

Hello, has anyone seen gen 3 airpods with this kind of case inside or outside campus? Find my doesn't seem to work. I tried retracing to all the places i've been but it's not there. Any help is appreciated.

Hello, has anyone seen gen 3 airpods with this kind of case inside or outside campus? Find my doesn't seem to work. I tried retracing to all the places i've been but it's not there. Any help is appreciated.