polyester/lycra,nylon/spandex,4-needle coverstitch sportswear machine washable won't hold odors won't irritate skin 1.Material: 100% merino wool 50%merino wool 50%polyester 50%merino wool 50% acrylic 30% merino wool 70% polyester 30% merino wool 70% acrylic2.Fabric Weight:180-260GSM3.Features: •Temperature control, so you are warm when it's cold, and cool when it's warm. •No stink, because our ...