Nayoo professional Canvas Block Head is made of poly and designed according to human's head shape. If you make your hair or expert, this head would make your job much easier.It will be the great choice if you are looking for a durable and professional head. 1.Product Name: nayoo 21"-24" Inch Canvas Block Wig Head Mannequin Head for Making, Dring,Styling Wigs with Table Clamp Stand. 2.Head Material: Outside Canvas, Inside Poly (Polyurethane is a New Organic Polyer Material, more DURABLE ), ABS cover bottom base. 3.Professional Design: The canvas manikin head mannequin is designed according to human head shape and designed with stability and comfort in mind, making your job much easier. It will be the great choice for hair experts or salon. 4.Head Weight: 450g±5. Head Height: 12 Inch. Please Allow Slight Dimension Difference Due To Different Manual Measurement. (Please allow 0.3” size tolerance ) Dimension Difference.The Error Is Within The Acceptable Range. 5.Advantage: The block Head shape is good. Lightweight, Waterproof, Not wet, No stains, Durable, Sturdy, and Well made. It can last a long time with good care. Much better than those cheap styrofoam heads.