Experience ultimate comfort during long hours of driving or sitting with this Ventilation Back Rest featuring lumbar support. Easy to fit with a 15 inch x 15 inch elastic strap that keeps the backrest securely in place Durable and lightweight design for effortless use Breathable mesh fabric allows airflow to keep you cool and comfortable Ideal for car seats, office chairs, sofas, and more Dimensions: 39cm x 40cm x 11cm; Weight: 146g Perfect for reducing back strain and enhancing posture during extended seating periods.