SeatZac insists on using high-quality materials. The MR Internal Pump is made of very strong ABS plastic and holds a 2600 mAh Lithium Powerbank which is able to inflate the SeatZac 20-25 times. Like any other powerbank, it is able to charge your phone. With the Seatzac you are able to create your chill spot whenever and wherever you are. The weight is just 920 gr., so you can take it everywhere with you.