Frame kits and frames are disclosed herein. In an example, a frame kit includes at least two frame legs. Each frame leg has two edges, where one of the two edges of each frame leg is to abut another of the two edges of an adjacent frame leg when a frame is constructed with the frame legs. Each frame leg includes a non-foamed polymer exterior wall; a hollow space defined by the non-foamed polymer exterior wall; and an expanded foam material positioned within the hollow space.