Your standard Rapha review runs like this: beautifully designed; great performance; frickin' expensive. We don't want to bore you but that's exactly what you get with Rapha's arm and knee warmers.
The warm Roubaix fabric has flat-stitched seams, the silicone grippers work well and you get a reasonable amount of reflective piping. Little features like pullers to help you adjust the arms and removable care labels demonstrate the excellent attention to detail. These would score a 10 on performance alone, but the price brings them down a rung.