The beef tendon base is good. PVC is polyvinyl chloride plastic, which has poor wear resistance, is light to wear, has better elasticity than rubber, is worse than tendon soles, and is not breathable.
The tendon bottom is made of polyurethane plastic, which has good elasticity and is particularly wear-resistant. The material is better than PVC and rubber. The rubber material is very stuffy, making your feet uncomfortable and prone to moisture. However, it is more suitable to wear in rainy and snowy weather without getting your feet wet. Each has its own advantages and disadvantages. It is better to wear tendon soles for daily use.