Zipper-connected segmented wedge back pillows allow flexible splicing and length adjustment to suit different bed sizes and sofa widths. Adopting heightened triangular ergonomic design, it closely fits the natural curve of the human spine, delivering full wrapping support for neck, upper back, waist and hips, effectively easing stiffness and fatigue caused by long-time reading, browsing electronic devices and leaning rest. Made of delicate soft surface fabric matched with high-elastic inner filling, tufted buttons stabilize the filler without displacement. Applicable to bedroom headboards, living room sofas and bay windows, ideal for casual relaxation, daytime naps and family leisure use.