Chair Heating Cushion that covers both the backrest and seat, giving you fast warmth and extra comfort for camping trips or home use. Specifications: 3 heat levels controlled with one button Low: 40-45°C up to 8 hours Middle: 45-50°C up to 5 hours High: 50-55°C up to 3.5 hours (The above data is based on using a 10,000mAh power bank) Durable black fabric, made for daily use