For durable handles and straps on cases, the following materials are considered the best:
1. **Leather**: Known for its strength and longevity, leather is a classic choice for handles and straps. It offers a premium look and feel, and with proper care, it can last for many years.
2. **Nylon**: High-density nylon is lightweight, strong, and resistant to abrasion and water. It is commonly used in travel and outdoor gear due to its durability and flexibility.
3. **Polyester**: Similar to nylon, polyester is durable and resistant to stretching and shrinking. It is often used in combination with other materials to enhance strength and durability.
4. **Canvas**: Made from cotton or linen, canvas is a heavy-duty fabric that is both durable and flexible. It is often used in casual and rugged designs.
5. **Rubber**: Rubber handles provide a comfortable grip and are resistant to wear and tear. They are often used in cases that require a non-slip grip.
6. **Metal**: Stainless steel or aluminum handles are extremely durable and provide a modern, industrial look. They are often used in high-end or heavy-duty cases.
7. **Kevlar**: Known for its high tensile strength, Kevlar is used in cases that require extreme durability and resistance to cuts and abrasions.
8. **Polypropylene**: This thermoplastic polymer is lightweight, resistant to chemicals, and offers good fatigue resistance, making it suitable for handles and straps that need to withstand harsh conditions.
9. **Cordura**: A type of nylon fabric, Cordura is known for its durability and resistance to abrasions, tears, and scuffs, making it ideal for heavy-duty applications.
Each material has its own advantages, and the choice depends on the specific requirements of the case, such as weight, appearance, and environmental conditions.