1. Can change from straight to curly and curly to straight many times without causing frizzing or tangling. 2. Heat Resistance: up to a temperature of 200°C 3. Best Styling temperature:100°C 4. Turn around time for custom orders:3 weeks without delay. 5. Minimum custom order quantity: 5pcs for each hair length, style and color. Minimum stock order quantity: 1pcs