Sock Sleeves. Arm Warmers. Black & Grey Stripes. Made in USA. I got these from sock dreams but they did not have a tag on them. I think they are a cotton/synthetic mix- unless cotton gets staticky too? They have a nice feel. I like the feel of cotton knit. These are open on one end, that goes on your forearm or you can scrunch it- and the other part has a separation for thumb & fingers. So they are sort of like the holed shirts ends but much better. These are fantastic! Wear them with 3/4 length shirts or under or over shirt sleeves. Keep your arms warm while driving or commuting. Or typing ok your computer, walking your dog, going for a jog etc… I used to like to wear them to & from yoga class/practice. Perfecto. See photos. About a foot long. There is a tint snag/hole I saw on one sleeve & am mending it now. Added photo of the tiny snag mended :) There are other cool sock sleeves in my listing & tons of variety if yoy like to bundle items. If you are new to poshmark you can sign up with my code to get $10 off your first order from anyones closet. REDREADRETALE