Conforms to BS5852 (Source 2)
The most commonly used hair in upholstery today. 100% pure animal hair (40% Pig Hair/40% Horse Hair/20% Cattletail). Very soft and good to work with. As an example of the quantity you may use an overstuffed dining chair without springs will use 3 to 4 lb in weight depending on the size and depth of the required pad.
Other options include: Black Fibre,
Fibre/Hair Mix or
Also available are Hessian Pads