“Extremely versatile piece of kit and my favorite arm warmers of the different brands I’ve tried. Warm but not at all bulky (I often take them off later in the day and put them in my jersey pocket and forget about them). The smooth outer fabric makes them slide very nicely under jersey sleeves. I wear a size XS in women’s jerseys and an XS in these warmers fit well. I probably could’ve gone with an XXS for a tighter upper arm fit but the XS doesn’t slide down at all and the jersey sleeve holds them well.”