Ballistic nylon is used main for the making of this model. This material is known especially for its excellent heat, friction, and also rip resistance, and it is often used for making airbags for vehicles and bulletproof vests for the military. With a combination of water repellent tarpaulin material, the textures are rich and contrasted in this all black Heat series. And each of the Heat model would come also with a wide variety of accessories, perfect for business and casual use