Cut from unused divider card stock. Has fold lines and perforations. (See photos) 【Size】Almost A4 size 21 x 28.6 cm → 40 sheets 【Thickness】0.46 mm (Postal postcards are 0.23 mm) Please use for reinforcing products, backing paper, crafts, etc.! I also use it as packing material and reinforcement when shipping products ⑅︎◡̈︎* Please purchase if you understand the product's shape. ⚠️ Ships on weekdays. ⚠️ Immediate purchase OK. ⚠️ No price reduction. ⚠️ Cannot be combined with other items for shipping. Please refrain from purchasing if you are concerned about storage at home or in a warehouse.