Description: Made of cloth and environment-friendly bio-gel. 100% safe, avirulent and no electricity. Soft and comfortable, convenient to wear. In summer, care your hair in cold therapy. Suitable for professional use or home use. Specification: Type: Safe Hair Caring Cap Meterial: Environment-friendly Bio-gel Heating mode: No plug is required Heat therapy: Microwaved for 2 minutes Cold therapy: Fridge frozen 1 to 2 hours Color: Black / Red / Pink Weight: 624g Size Chart: Size: Length 27cm/10.63", Thickness 2.5cm/0.98" Package Includes: 1 x Hot Oil Hat Note: Please allow 1-2cm (0.4-0.8") differences due to manual measurement, thanks. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same