40 Sheets of Blotting Paper, approx. 285mm x 220mm, 135GSM, Stamp Drying Paper, Many Other Uses.

This is the blotting paper that my father and myself use for drying stamps once steamed off envelopes.

Blotting paper is sometimes called bibulous paper and is a highly absorbent type of paper. It is used to absorb an excess liquids  such as ink or oil from the surface of writing paper, or to absorb moisture to dry stamps and keep them flat while drying for collections etc.