1. SIZE OPTIONS: The headboard pillow measures 78.7' in length and is designed for a queensize mattress. 2. ENJOY BETTER SLEEP WITH HEADBOARD PILLOW: This sofa arm support pillow is crafted to deliver comfort, support, and convenience. It functions not only as an armrest or headrest for wooden sofas but also fills the gap between the headboard/wall and the mattress. 3. DURABLE AND COMFORTABLE HYBRID CUSHION: Our bed filler is constructed with memory foam and encased in a durable polyesterblend fabric, ensuring lasting shape retention and ultimate comfort. The removable zippered cover is machine or hand washable. 4. VERSATILE USE: This soft, flexible pillow can serve as a headboard cushion wedge, a bedside pillow, or even a gap filler between walls and mattresses. It's ideal as a sofa cushion support, a pet barrier under the bed or sofa, or even as a bed foot lifter. The possibilities are endless!