These are available in 2 types :-
Silks and Honeycomb
Silks are fine-pored and range in size from 1 – 5” (2.5 – 12.5 cm). Their fine face makes them ideal for modelling and mould-making.
Honeycomb sponges are more open-pored and range in size from 3 – 4” (7.5 – 10.16 cm). Their cell structure enables them to be used in decorating and casting.