This is a composite material of Carbon Nanotube and Graphene, and our design fully exerts the beneficial propertise of carbon materials without any solvent.This product has three advantages: First, High Conductivity–better than iron and copper, which leads to great thermal transfer performance that allows heat to spread rapidly;Second, High Flexibility – film design fits perfectly with garment without bringing any uncomfortableness when wearing;Third, High Stability – great heat tolerant, which provide safety for daily uses, and extend durations.