My answer: the Patagonia Houdini jacket, the thinnest article of clothing I've ever worn in my life — and shockingly, one of the coziest. I was definitely skeptical about paying $100 for ...

2. Bestseller: This soft and breathable fleece jacket is perfect for shoppers who prefer lightweight outerwear! 3. Sleeveless Pick: This ultra-thin vest features heat across the left and right ...