Industrial or commercial polyester webbing, polypropylene webbing, and nylon webbing are very common webbing materials. Each type of webbing has it's advantages and also it's disadvantages.
Polypropylene combines the best of nylon and polyester! Although Nylon webbing is typically a very strong type of webbing, colors can lose their vibrancy over time, if left in the sun. Polypropylene webbing on the other hand is very resistant to any type of bleeding and is color-fast. The polypropylene I use is made in Germany, has UV protection (won't fade from sun exposure) is soft, very easy to clean and resists absorbing any odours.
Polyester and nylon webbing are typically very strong. Polypropylene webbing, on the other hand, is not as durable. This is why I combine 4-6 layers of webbing that are expertly sewn together for my collars, harnesses or leashes.
Collar with 5 layers of PP webbing
The Polypropylene (PP) webbing that I use is around 1,4 mm (0,055 inch) thick and has a breaking point of approx. 500 daN (equal to 500 kg or 1102 lbs).
Available PP colors are: