Achieving phenomenal warmth in cold and wet weather, this vest features PrimaLoft® ThermoBall™ technology, TNF™'s new synthetic alternative to down. As compressible as down, and with the warmth equivalent of 600-fill down, the clusters of round synthetic Thermoball™ trap and retain heat within small air pockets to provide effective insulation, even when wet. Low-profile internal hem drawcord. Super-lightweight construction. Stowable in hand pocket. Three-color pop-trim zipper-pull detail. bluesign® approved fabric. Body: 100% nylon (bluesign® approved fabric). Insulation: 100% polyester PrimaLoft® ThermoBall™. Machine wash cold, tumble dry low. Imported. Measurements: ; Length: 26 in ; Product measurements were taken using size XS. Please note that measurements may vary by size.