It's brown? More like a dark brown color. The size is men's L. It's plain, with no embellishments or logos. The pants have an elastic waistband and a drawstring. I bought them last year, but they were too big for me, so I only wore them once and they've been in the closet for a year. It's 100% polyester. I think you'll be able to spend the upcoming season very warmly at home. I did wear them once, even if it was inside the house, so please understand that they are used clothing. We have pets and smokers in the house. Please refrain from purchasing if you are sensitive to these factors.