US Patent 11534653 Collapsible yoga block

A yoga block includes panels forming a quadrilateral tube and secured to one another by hinges such that the tube may be collapsed. Endcaps secure to ends of the quadrilateral tube and engage the quadrilateral tube to resist collapse when in place. Panels may define protrusions engaging recesses on edges of the endcaps. Magnets in the endcaps may engage the hinges to secure the endcaps in place. Rotating or sliding tabs may also be used to lock the endcaps. Inner surfaces of top and bottom panels may define grooves for receiving a weight plate. Endcaps may be secured to panels by hinges. The hinges securing panels or endcaps may be double hinges.