Rehabilitating leg warmers I have a pair of leg warmers, purchased from Performance Bicycle some years ago. They're still in decent shape, but the rubber or silicone layer at the top that holds them up has thinned. The warmers tend to slide down my leg these days.

Is there a way to re-create the layer that's meant to grip them to my legs?
This stuff is not expensive.  Simply unpick the stitching, and replace it.

The hardest thing will be doing the stitching in a way that will stretch, because a plain straight stitch will not work.  A fancy modern sewing machine can do these stitches, as can an overlocker.

Example pricing seems to range from a few dolleurosuid to tens of them.  It gets cheaper in larger lengths, with 50 metres being under $1 / metre.

https://www.aliexpress.com/w/wholesale-silicone-gripper-elastic.html  for example.  Keywords here are "silicon grip elastic"