5 fit me well at DSW, so I obviously went for that. * These replacment earpads are MUCH more comfortable than my factory earpads that came with the Sennheiser Momentum 2. However, neither is trying to transmit that voice over bluetooth. In a word, Amazing. I wouldnt order a size 8. But with a little glue i was able to fix it. I do wish the straps were one foot longer. It does work, its essentially two long belts you attach to your bar and push at an angled slope. Just to have him call and recommend I make a favorable review speaks volumes and he usually cannot care less of such reviews. ?? We shall see.