Polartec® 200 Classic fabric offers outstanding warmth and versatility for whatever outdoor activity you choose. It is the mid-point with regards to weight and warmth in the Polartec® Classic fabrics and therefore, the most functional.
" This is the fabric that started the fleece revolution and remains Polartec® LLC core product. Replacing traditional sweater constructions, this easy care, non-pill, colorfast, midweight fleece provides an all-purpose insulating layer. It is available in a variety of textures, finishes, colors and widths." From the Polartec® LLC® Website describing Polartec® 200.