The mate to the famous base leggings the Hot Chillys Micro Elite Chamois Crew Women's Top sets the standard for a “no frills” technical synthetic baselayer by incorporating all the details, including thumbholes. You’ll find other brands of synthetic thermals using polyester and spandex blends to create a stretchy fabric but they’ll skip the essentials, and we’re of the opinion that thumbholes, which allow you to slide a baselayer under any midlayer without tugging, shifting, or bunching, for a perfect next to skin, no-chafe, fit is an essential. A knit fabric with a smooth face for gliding into a midlayer and a napped interior for wicking away unwanted moisture from your core quickly and efficiently while trapping warm air next to your skin this is the standard by which all others should be measured. A body fit design with tailored shaping seams and seams set away from the shoulders to make this pack friendly this has been treated with Bio-Silver to inhibit the growth of odor causing bacteria for an all day freshness in a piece that’s easy care at the end of the weekend. Because this is cut to fit like a second skin if you feel you’re between sizes, size up. A piece that moves with you, keeps your core comfortable, and glides into midlayers smoothly and easily thanks to an attention to detail in design and fabric.