The load capacity of the exercise sled is adjustable; You can choose your desired weight by adding different numbers of weight plates. Maximum capacity: 500 lbs / 226.8 kg. The provided 10ft/3m strap can be adjusted in length and the soft shoulder harness can reduce the friction between the strap and the skin to prevent shoulder damage during exercise. Installing the training sled is easy and flexible, so you can exercise immediately after attaching the leash to the sled. The weight sled used for training features various forms of exercise. You can use it to push, pull, or drag. The drag sled plays an important role in acceleration, speed, conditioning and strength. It can also be used on different surfaces such as grass, carpet, concrete.