Feature●Size: Width 3.5 inches (90 mm) x Top 8.1 inches (205 mm) + Flap 0.7 inches (18 mm) Rice Tsubo: 2.6 inches (70 g/m2 Paste Method: Medium Paste Post Frame: ABS Frame Glue: Pear Window: Recycled Plastic Window 1.8 x 3.1 inches (45 x 80 mm) Contents: B5 mm)●These white envelopes are made of bleach craft for strength and a calming texture●The contents are lined with a non-see-through lining (printed on the inside of the envelope)●4 long envelopes, also known as long as 4 long envelopes, are shaped envelopes that fit B5 trifolds. It is often used for delivery and receipts●Uses forest certification paper. This product cannot be printed with a laser printer. This may cause malfunction. (If you use a laser printer, please use the "LP Envelope" = laser printer safe heat resistant window envelope. )Description