From J.Crew: Our softest active fabric holds you in like a good hug, and is crafted from recycled bottles, yarns and fabric scraps. Plus, CloudStretch has special moisture-wicking properties, so you'll always keep your cool. We crafted it into this sleek pullover, featuring a half-zip and a mockneck. Plus, this style is also made from polyester recycled from plastic that could otherwise go to landfills. 77% recycled polyester/23% elastane. Machine wash. Approximate length is 23” (taken on size small) S9