Original Factory Multicolor Pentagon Silicone Pen Case Large Capacity Student. Customized Logo and Color: Support custom logo, Pantone color, and design options. OEM & ODM Services: Full customization available from samples, designs, or flexible requirements. ISO-9001 and BSCI Certified: Company passed ISO-9001 and BSCI certifications for quality assurance. High-Quality Food-Grade Silicone: Made from non-toxic, odorless, and environmentally friendly food-grade silicone. Waterproof and Easy to Clean: 100% waterproof material that is easy to clean with water or a damp cloth. Foldable and Flexible Design: Soft, flexible, and foldable for convenient storage and daily carrying. Durable and Fade Resistant: High-quality material ensures resistance to fading and deformation over time.