Description: 【Reliable Quality】: Corrugated cardboard sheets made of thick durable cardboard with a bonded groove in the center that provides support to the cardboard but also makes it flexible. Each sheet is eco friendly and can be recycled after use. 【For Mailing or Packaging】: Corrugated cardboard is layered and used inside cardboard boxes to add extra padding inside or between items to keep them from rubbing and bumping together The card is lightweight and economical, reducing packaging and shipping costs. 【Thickened Design】: 250g hard thickened cardboard, with 3 layer or 5 layers (according to your choice) two thickness options, the hardness is higher than other similar cardboards on the market! 【Easy to Handle】: Our flat cardboard sheets can be easily cut, folded, glued, wrapped, shaped, painted, decorated and torn. Because our cardboard is so versatile, it can be used for 3D model making, box making, school projects and classroom displays. 【Multi Purpose】: Use the reversible corrugated to make cat house models, photo frames, billboards, signs and other DIY projects, it is also a very suitable material for making houses models! Specification: Material:Corrugated Cardboard Size Chart: 100cmx45.5cmx8cm/39.37inchx17.91inchx3.15inch Package Includes: Optional: 10 Corrugated Cardboards(3 Layer) OR 10 Corrugated Cardboards(5 Layers) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on Line shopping!