**Product Specifications:**
**Brand:** Cambridge Tree
**Product Name:** Horizontal Vertical Pen Case
**Size:** 10cm x 4.5cm x 22cm
**Material:** Polyester Fiber
**Color:** Combridge
**Weight:** 165g/225g
**Features:**
- Innovative design with multiple compartments
- Ergonomic and eye-protective
- Sturdy construction with high-quality materials
- Easy to organize and access stationery items
- Suitable for students of all ages
**Certifications:** IGR, CNAS, SMQ, German IGR, China Qualified Assessment, Deep Inspection Group, International Ergonomics Certification, National Accreditation, Quality Technology, Laboratory Accreditation, MA, NBTS, Chinese Academy of Sciences Institute of Mechanics, Guangdong Energy Label, Patent Certification, Quality Certification, Authoritative Evaluation, Authoritative Testing
**Sales Data:** Over 11,210,737 units sold across all channels from January 2018 to August 2024
**Product ID:** Cambridge Tree Horizontal Vertical Pen Case