Material: Kanekalon
Length: 20" (50cm)
Weight: 100g
Full Head: suggest needs 2-4packs
The weight is the most important factor. Weight and Length decides the thickness. Usually, a full head needs at least 100g hair. Also please contact us if the Synthetic Fiber not the same color you want when open the package,we can resend new ones or refund for the hair to you.