Fitted my HP Omen 800 headset perfectly, these are the ones you want (some other ones have a less comfortable cushion) Arrived in the UK within 2 weeks. To replace them it's quite simple, watch a youtube video but basically the current ones are secured to a plastic ring which pulls off (pull the earpads connected but not with too much force you snap the plastic connectors) then peel off the existing ear pads and these easily slide over the top. Pretty much exactly the same as the existing ones.