We measure the length of hair when the hair be stretched to straight.1) Material: 100% human hair, brazilian virgin hair.2) Quality: no shedding, no tangles, no lices, top quality3) Human hair Length:12"-40"available in stock.4) Human hair Color: Natural Color,can be dyed always.5) Style: silky straight, yaki, body weave, deep weave, water weave, super weave, bebecurls and so on.6) Packing: we will pack goods according to your requirements, OEM order will be packd with your brand and logo if you want.