NWT 100% high quality heat resistant synthetic fiber, which is very suitable for long term use, Length : 16 Inches Can use hair curler to straighten or curling hair,but the temperature should below 161 degrees Celsius. Please note: All Synthetic Wigs will Shed Hairs Slightly When you Wear it for the First Time,Which is Normal. Breathable wig cap,light weight,Wig cap size: average circumference 22"，adjustable elastic band and hair clips provide you comfortable wearing experience,Suitable for most people.