Abstract: A foldable structure is disclosed. The foldable structure includes at least four frame members, and the number of frame members is even. A fabric material covers portions of each frame member to form a panel for each frame member. Each panel further has a left side and a right side, and the left side of each panel is connected and hinged to the right side of an adjacent panel, and the right side of each panel is connected and hinged to the left side of another adjacent panel, forming a ring of panels that encloses an interior space. The panels are folded to overlay each other.

Abstract: A foldable and portable frame is disclosed. The foldable and portable frame comprises twelve posts and eight flexible joints or linkages. The foldable and portable frame can be easily erected to be a stable substantially rectangular structure, and folded to a collapsed state to be portable. A foldable and portable frame with coverings is also disclosed. The foldable and portable frame with coverings can be erected and folded in a same fashion as the erecting and folding of the foldable and portable frame.