100% recycled Japanese paper letter set. Two layers of differently colored raw materials are extruded together, allowing the colors of both sides to show through slightly, giving the reversible colors a depth that only Japanese paper can offer. Although the paper has a fibrous feel typical of Japanese paper, it is smoother than it looks, with little blurring, making it comfortable to write on. -Suitable for: Ink Brush pens Fountain pen Pointed pen for calligraphy -Size: Letterhead :148 x 210 mm (A5 size), ruled, 15 sheets Envelopes:162×114mm, 5 sheets -Washi: Mino Washi, machine-made -Product design: WACCA JAPAN