Luxury Cashmere Thigh High Socks are warm. These luxury thigh-high's colors range from subtle to vibrant. Cashmere ... everyone thinks of it as "fluffy" - which is what pure cashmere becomes after just a couple of washes. Then there's the Fantasie Rib of our Cashmere-Silk blend. These cashmere thigh-high socks are simply exquisite. All available in a wide range of tasteful pastels and vibrant fashion colors. Which Sock Fiber is best for you? A complete Socks Education. Sock Terminology Defined.