**Product Specifications:**
**Brand:** Three Years Two Class
**Product Name:** Convenient Loose-leaf Binder
**Colors:** 12 colors available
**Features:**
- Multicolor design
- Convenient opening and closing
- Easy replacement of inner core for smooth writing
**Size Options:**
- Exhibition: Two sizes available to meet different needs (Large and Regular)
- Large Size: 40mm x 13mm
- Regular Size: 40mm x 8mm
**Hole Diameter:**
- Large Size: Outer 15mm, Inner 13mm
- Regular Size: Outer 13mm, Inner 11mm
**Product Parameters:**
- Maximum Capacity: Holds approximately 100 sheets securely (non-flip) for storage, 60 sheets for smooth flipping during daily use
- Locking Mechanism: Top and bottom detachable snap button for flexible use
- 360° Flip: Smooth page turning without jamming
**Advantages:**
- Convenient for study and work
- Easy to use with a compact locking design
- Suitable for integrating and organizing documents
**Suitable for:** Students, professionals, and anyone in need of a versatile and colorful loose-leaf binder
**Usage Methods:**
- Method 1: Gently pinch the top and bottom parts of the ring to open
- Method 2: Forcefully open the misaligned top and bottom ends
**Color Options:**
- Retro Color Series: 5 colors + black + white
- Candy Color Series: 5 colors + black + white + black and white patchwork
**Store:** Official flagship store of Three Years Two Class stationery
(Note: Measurements are approximate and may have slight errors due to manual measurement.)
