Item Details *12 inches = 30cm, 1.25g/pc *14 inches = 35cm, 1.5g/pc *16 inches = 40cm, 1.5g/pc *18 inches = 45cm, 2g/pc *20 inches = 50cm, 2.5g/pc *22 inches = 55cm, 2.5g/pc Application suggestion: * Short hair, want long & volume effect--80 pieces please * Long thinner hair, want more volume effect, 40-60 pieces please * Testing hair or want highlight effect, 10-20 pieces pelase What is Remy Hair The term “REMY” is not a pretty woman's name, It refers to the characteristics of the hair and the method used to manufacture the hair extensions. Remy hair is collected in a method in which holding the hair in a ponytail and cutting (top at top, and ends at ends) as it grew. This eliminates tangling problems commonly found in non-Remy or low quality hair. Remy hair is 100% human hair, all hair is full cuticle intact and aligning them in a unidirectional fashion creates extensions that are completely natural in appearance, which is not stripped. This cuticle will keep protein in the middle of hair fiber which makes hair fiber silky, soft thoughout its life time. It is easy for you to comb with your finger, special after washing it. Remy Hair refers to the hair surface with scales, and the scales are basically in one direction to smooth hair. I like to think of it as shingles on a roof, they all have to go the same direction. Remy is hair collected and sorted from various sources with the root Remy hair is more expensive and looks more natural due to the tedious process that the hair goes through to not damage the cuticle. Usually virgin hair or hair that has been minimally processed to protect the integrity of the hair has cuticle in tact. REMY hair is a smoother, shinier, and healthier appearance than NON-REMY. This hair feels amazing even after multiple times being washed. Most of our clients can get a year or two of wear with REMY hair still looking great. The investment is great but well worth it. Why is the color of the hair I received different from the pictures on the website? This is normal, because everyone's monitors are different, so we will see different colors. If you can't confirm the hair color you need, please provide me with your hair in the sun and indoors. Color, I will give you suggestions or provide you with pictures or videos you need. How to Identify Human Hair and Synthetic hair? ---Firstly, get ready for a lighter and a little strand of hair ( At least 10 hairs）. --Then, burning the end of hair for 3 Seconds. *****Human Hair***** ---Burns very quickly, and it smells like a burst fragranced. ---When the lighter is moved away, the fire will be extinguished immediately. ---After burning, it is easy to turn to be ashes. *****Synthetic Hair***** ---Smells like burning plastic, very pungent, and there is black smoke when it is burning. ---When the lighter is moved away,The hair will continue to burn for several seconds. ---After burning, it turns some small lumps.