Found some 22 dB noise reduction rating headphones at Lowe’s today:

AO Safety® WorkTunes® AM/FM Stereo Radio and Hearing Protector

They have an am/fm radio (obvious from the name) but I can’t pick up much down here. No big deal for me because I don’t usually listen to the radio if the Preds aren’t playing. The big win is the 1/8″ stereo in jack and included patch cable, for whatever device you want to plug in. It’s also blatantly obvious to people who want to talk to me that I can’t hear them because of the big yellow thing on my ears.

At least they know why I’m ignoring them now.