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Don't think you'll get any that are more hi vis/reflective
Tempted by a pair myself actually.
Also for my 2 cents on velotoze - I found them quite delicate. I had a few small tears on mine after putting them on only a few times, they're a bit of a faff. Don't think I'd bother again as a waterproof job, but might for aero gains for national champs (if I don't go for fancy aero material overshoes)
Any suggestions for commuting overshoes for recessed SPDs that are easy to put on plus hi-viz/plenty of reflective material?