Name: Canvas Head for Wigs Size:head height:12.5 inch, Circumference: About 22 inch (Please allow 2-3 cm error due to the hand measurement) Head weight: 3505g Head Material: Outside Canvas, Inside Poly Poly is not Styrofoam. Poly is more DURABLE than Styrofoam. Easy to insert T pins in it. Difference between Poly Head and Cork Canvas Head: Poly Head is light weight 1lb, Cork Head is about 2-3 lb. Poly Head Can be washed, Cork Head is not Suggested to be Washed. Package1* Canvas Head + 50 Pcs T-pins + 1*Table Clamp Stands This head is designed according to human's head shape. And you could put pins and hold hair easily.If you make your hair or expert, this head would make your job much easier.