•Works with a 5V/2A power bank (not included) to generate heat and keep you warm •A good tool to keep you warm outside in cold winter •Made of high-quality Oxford cloth, with soft sponge lining, it is soft, wear-resistant, and can be reused for a long time •Easy to fold up and convenient to carry •Perfect for stadiums, sporting events, camping, hiking, fishing, etc Specification: •Size: 44*40*1.5cm •Material: Oxford cloth/300D frosted cloth+1.5cm sponge+3 heating sheets (9*25cm) •Weight: 0.215kg Note: The product itself does not carry electricity. To use the heated function requires you to use your own 5V/2A 10000mAh power bank to power this cushion, only that it will be used for 4.5-10 hours (the higher the gear, the shorter the use of time) Package included: •1 x Heated Seat Cushion •Other things not included