## Common ground
All options are types of spectacle cords or chains used to secure eyeglasses to the wearer’s head.
## Options at a glance
**5609.00,6307.90 – Made of textile material**
- **Defining trait:** Constructed from fabric or woven fibers (e.g., polyester, nylon).
- **Typical examples:** Elasticated fabric straps, braided cotton cords.
- **Best fit when:** Lightweight, flexible, and comfortable for daily wear; often used in casual or fashion eyewear.
**7117 – Made of imitation jewellery**
- **Defining trait:** Designed with decorative, fashion-focused aesthetics resembling jewelry.
- **Typical examples:** Gold-plated chains, beaded or ornate metal links.
- **Best fit when:** The product is primarily intended as a fashion accessory, not just functional.
**7315.8X – Made of iron or steel**
- **Defining trait:** Constructed from durable, rigid metal with high tensile strength.
- **Typical examples:** Sturdy metal chains, wire-based cords with clasp mechanisms.
- **Best fit when:** Long-term durability and resistance to breakage are key (e.g., for active use).
**7616.99 – Made of aluminium**
- **Defining trait:** Lightweight yet strong, corrosion-resistant metal construction.
- **Typical examples:** Thin aluminum wire cords, minimalist adjustable chains.
- **Best fit when:** Need for light weight and resistance to rust (e.g., outdoor or humid environments).
## Key differences
| Feature | Textile | Imitation Jewellery | Iron/Steel | Aluminium |
|---------------------|---------------|---------------------|----------------|----------------|
| Material | Fabric | Decorative metal | Heavy metal | Light metal |
| Weight | Low | Medium to high | High | Very low |
| Durability | Moderate | Varies | Very high | High |
| Primary use | Comfort | Fashion | Longevity | Lightweight use|
## How to choose
- Is the cord made of fabric or woven material? → 5609.00,6307.90
- Does it look like jewelry or serve mainly as a fashion accessory? → 7117
- Is it thick, rigid, and made of heavy metal (like steel)? → 7315.8X
- Is it light, shiny, and likely aluminum alloy? → 7616.99
## Overlaps & pitfalls
A product may combine traits—e.g., a metal chain with decorative beads could fit both 7117 and 7315.8X or 7616.99. If multiple apply, prioritize based on the **main function**: use 7117 only if fashion is the primary purpose; otherwise, choose by material (e.g., steel vs. aluminum). The term “imitation jewellery” may mislead—only apply if design is clearly decorative, not functional