I have knit these type of scarves in the past, but I've decided to sew some using my serger. The edging I am using is called a napkin edge.
Infinity scarves can be worn double stranded for a cowl or necklace effect.
Or, you can wrap them around the neck three times for a neckwarmer!
Another nice look is to wear an infinity scarf single stranded, so you can cover the shoulders for a shawl effect.
Please visit my Etsy Shop - PA Fiberartist to see more of my handmade accessories.