Super soft yet technical youth light weight base layer set that includes top and bottom pieces. Made of a soft 100% polyester lycra spandex blend, this base layer set can be used for all kinds of outdoor activities as the foundation for any layering system. The material incorporates moisture transfer fibers for superior moisture wicking performance. Slip on this super comfortable base layer set and there is a good chance it will be worn 24 by 7! Limited lifetime warranty against material or workmanship defect.