The exact material is composed of: 66% Polyamide, 23% Polyester, 11% Elastane,and these knickers may be machine washed at 40 degrees, do not iron but line dry. New and unused, the RRP is: £10.00. I apologise for the fit of these knickers on my mannequin, I had to clip them at the back because the mannequin is S - M and the knickers are XL or 2XL.