Human Hair Blended Styles Are Made with a Mixture of the Finest Human Hair and Enhanced with an Innovative High Heat Fiber. This Offers the Best of Both Synthetic and Human Hair Worlds! Human Hair Blend Styles Offer the Lightweight Density and “staying Power” of Synthetic and the Stylability, Feel and Movement of Human Hair. the Heat Friendly Premium Synthetic Fibers Allow Heat Styling Up to 350 Degrees Fahrenheit. Any Human Hair Blend Style Will Hold Longer, Even Through Washing’s. Incorporate the Best Attributes of Both Heat Defiant Fiber and Human Hair Fiber.