The North Face Men’s Thermoball Vest - EU is packable yet warm making it a versatile layer for a plethora of activities. Thermoball insulation gives warmth even when wet and is highly compressible. A light yet hardwearing ripstop shell withstands the rigours of the outdoors. Read the full product feature list below. Technology: ThermoBall ThermoBall technology - is our new synthetic alternative to down. As compressible as down, clusters of round synthetic Thermoball trap and retain heat within small air pockets to provide effective insulation, even when wet