Fun Matching Set - Our Cuddl Duds Boys thermals come in a variety of fun designs your boy will love. Comes complete with a printed base layer top and matching thermal leggings. Make getting dressed more exciting. Not only are they functional as thermal underwear, but they also appeal to your boy's superhero dreams, making them a boy essential. Advanced Comfort Blend - Engineered with an advanced comfort blend of 92% polyester & 8% flexible spandex, our thermals provide the perfect underlayer for kids during colder seasons. An incredible balance of comfort and mobility, the lightweight design ensures they can be worn beneath clothing, helping your child stay warm without the bulkiness. Whether it's building snowmen or engaging in winter adventures, these thermals offer a cozy & flexible base layer that keeps up with every snowy escape