Here are the main material options for BOB Wig:

1. Human Hair
Human hair BOB Wig are made from actual human hair and have the following characteristics:
- Natural Appearance: Human hair BOB Wig look and feel very similar to natural hair, making them extremely realistic.
- Customizable: Human hair BOB Wig can be dyed, permed, and styled just like natural hair, offering great versatility.
- Durability: They are more durable and can last for 1 to 3 years with proper care.
- Cost: Human hair BOB Wig are generally more expensive, especially high-quality ones.
- Sources: Human hair can come from different regions, such as China, India, and Brazil. Chinese hair and Brazilian hair are often considered of higher quality.

2. Synthetic Fibers
Synthetic BOB Wig are made from chemical fibers and can be further categorized into:
- Regular Fiber: These are inexpensive but prone to deformation, not heat-resistant, and less realistic. They are gradually being phased out.
- Heat-Resistant Fiber: These fibers can withstand higher temperatures (theoretically up to 100°C-160°C), allowing for some styling with heat tools. They are more realistic and moderately priced.
- Protein Fiber: These fibers offer the highest level of realism and texture, closely resembling human hair. They are commonly used in high-quality synthetic wigs and are more expensive.
- Flame-Retardant Fiber: These fibers are less flammable and safer to use, though they are more costly and less commonly used.

Summary
- For a natural look and styling flexibility, human hair BOB Wig are the best choice, but they come with a higher price tag and require regular maintenance.
- For a budget-friendly option, synthetic fiber BOB Wig are a good alternative, especially those made from heat-resistant or protein fibers, which provide a good balance of realism and affordability.