... thickness 4.100% recyclable Black PP Material Folding Clip Board With Inside Pocket/Customized clipboard/Metal clipboard: PP 3-Layer ... Foam Board Features:1. PP 3-layer foam board covers, eco-friendly, non-toxic, ... intensity, 100% recyclable material2. 25% lighter than general PP board, waterproof, durable3. High heat resistance, excellent chemical resistance, insulation ...