One pack solution: Our synthetic hair bundles one pack is enough to do a full head sew in style
About length: The 18 20 inches of synthetic hair bundles are the stretched length
About Weight: The kinky curly bundles are 70grams/bundle. There's 4 bundles in one package
About material: High temperature heat resistant fiber synthetic hair. Can be straightened within 360 degree(Fahrenheit), soft as human hair, and also very natural