Really disappointed by the size of the atria. These are indicated at 45 mm, but actually, they make 40 mm. And I thought they would be sufficiently elastic to fit my wired headset, but alas, alas 1000 times !!! Nothing to do, I have only to give to someone else and buy a bluetooth headset or ear foams without a microphone alone, so it's a hassle to find the right size to replace those pesky foam ear cushion !!! VERY DISAPPOINTED ...