My work requires me to be outdoors no matter the weather and I have become quite the "expert" on layering, thermal underwear and cold weather gear. The new crop of "Under" brand garments mostly leave me cold - too slick against the skin with no air pockets to trap air for warming. The Kenyon Outlast products were a delightful find because they still have the loft (air pockets) to trap air for warming with a soft feel against the skin and an outer layer that really does keep me dry by allowing sweat to evaporate. Yes, everything they claim to be is true. Even better - they are MADE IN THE USA. Great product, good value, will definitely buy more as this type of thermal is getting hard to find.