Pull on the prAna Keller full zip when the sun has set but you're not ready to head indoors. An organic cotton blend is wrinkle resistant and ready to wear straight out of the duffel. Fair trade factory certification supports better working conditions for the factory workers who make it through investment of a premium of each item sold going into social development projects. 57% polyester and 43% organic cotton. Jersey knit with quick drying blend of polyester. Rugby stripe layout options. Front zipper closure. Standard fit. Material: Polyester, Organic Cotton.