ARPA papers are made in the traditional way of artisan paper. Therefore, these papers are formed by noble fibers of annual plants, basically cotton. The preparation of these fibers and their refining is carried out in a Dutch pile with the hours required to "caress" and hydrate the fibers. The sheets of paper are formed one by one and therefore all of them have 4 "beards" regardless of their size. The paper dries in the air, which gives it the special characteristics of volume, texture and surface. Note: Measurements may vary slightly due to the handmade nature of this paper. Special Orders: Special orders are available. 4 to 6 week delivery time. Inquire at info@soolip.com All envelopes come with ungummed flaps. We recommend supple sealing wax or standard glue stick purchasable at any office or stationery retailer.