Apparently it's hoops that have the illusory effect. But I think some of us are too far gone for that. I always thought Donny fans were a bit on the thin side.I’m normally a traditionalist and prefer even stripes but I must admit I quite like this one. I’ve not had one for two or three years so I might just go for it. Am I correct in saying that the thin stripe will make the more rotund of us look slimmer.......no I thought not.