The Under Armour Women's Rival Fleece Crew is a top-rated activewear sweater on Amazon. It is made from a blend of cotton and polyester for a soft and comfortable feel. The sweater features a crewneck design and a relaxed fit, making it perfect for both workouts and lounging. It also has a kangaroo pocket for added convenience. With its high-quality construction and brand reputation, this crewneck sweater is a reliable choice for any woman looking for a stylish and functional activewear option.