Dr. Scholl's Black Max Support Copper-Infused Posterior Cushion: ERGONOMIC POSTERIOR DESIGN: This design provides targeted support to ease lower body discomfort while promoting a healthy posture. TAILBONE SUPPORT: The distinctive U-shape alleviates pressure on the tailbone. COPPER-INFUSED MEMORY FOAM: The premium memory foam core conforms to your body's unique shape, offering customized comfort. AIRFLO TECHNOLOGY: This seat cushion advancement utilizes small ventilation holes throughout the memory foam to enhance air movement so you stay extra cool and dry. EXTRA FIRM: A large-size cushion combined with extra-firm memory foam provides full coverage and enhances overall support. ANTI-SLIP BACKING: Our anti-slip backing keeps the cushion in place during car rides to improve your sitting position and give your spine greater stability. BUILT TO LAST: The durable polyester cover resists wear and tear. EASY TO CARRY: A built-in nylon strap handle makes transportation easy. USE IT ANYWHERE: The versatile design is great for vehicles, home, and office. Weight: 2.82 lbs.