This is a mockneck zip-up with zippered pockets and thumbholes. It’s crafted with FormaFleece™ — premium fleece with a cool, next-to-skin feel ideal for those active days. This fabric is made with recycled polyester and features spacer construction for smoothness inside and out. Size 3 , equivalent XL Review: "The material has a scuba feel. It holds its shape all day. I normally would wear size XL and size 3 fits great with an oversized look" Super quality, oversized look, great design