This Core 365 full - zip is perfect for men who need a warm and functional layer. Whether you're working outdoors or looking for a great employee gift, it fits the bill. The body is made of 7.5 oz/yd² (260 gsm) 100% polyester fleece, and there's a 100% nylon taslon overlay on the upper panel and lower arms. It also has a shock cord at the bottom hem and an audio port.