The stationery is printed on one side on 52gsm Sanzen Tomoe River ultra lightweight fountain pen friendly paper. Half the thickness of regular paper. Each set includes 12 sheets of letter writing paper, 6 kraft envelopes, 6 matching address labels and 6 matching envelope seals. Each sheet measures 5 7/8" x 8 1/4" (A5) and is printed on one side. Specialty paper from Japan, Tomoe River highlights the features of fountain pen like sheening and shading. This is 52gsm, ultra lightweight paper, half the thickness of regular copy paper. Colours may differ slightly from photos due to different monitor settings.