THANK YOU. I finally found out they were sold at my local W but oh my god I'm so tired of looking for the right belt! Ordering here is a stroke of luck. My wind tunnel is not new and changing the straps is quite a hassle. I found some straps at a hardware store that the seller thought would fit. OMG OMG OMG, do you like the smell of burnt rubber in your house? Gagging a decent amount of smell hours later? I found the smell after the housekeeper left, disassembled the vacuum and then threw away the belt and that fixed the smell but seriously save yourself the hassle and just order here. Worth it for me.