Material: Premium Quality Fibre
Length: 18"-22" (45cm-55cm)
Weight: 100g each set (without back paper packing)
Full Head: suggest needs 2-3packs
The weight is the most important factor. Weight and Length decides the thickness. Usually, a full head needs at least 150g 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.