This sled is HARD work on the pavement. That being said, it is a heavy duty, quality product that assembled very fast. The multi tool included is pretty much garbage, so I had to use my own socket wrench. Outside of that, I am exceptionally happy. The customer service for this company is great and answered all my questions within 24 hours. Highly recommended.Great sled and even more awesome customer service from the Rep Fitness team. My sled had a screw that was stripped upon initial delivery and I contacted them directly and they were able to send me a replacement foot and screw very quick. My wife and I have used the sled for conditioning a few times so far and we love the quality and workmanship of it. You can definitely tell it's built to last! If you're wondering what all you can do with this beast; just lookup prowler training and enjoy! You can make it a great total body workoutI bought this for the gymnasts that I coach to help with speed training. The sled is heavy enough by itself for the girls to use without weights.Given that this sled is ~$100 less than what you can find on Rogue or EliteFTS I was a bit skeptical of the quality, but it has exceeded my expectations. This is a great sled for the garage gym athlete and works well on both asphalt and grass. Great product and I highly recommend it!For the price my sled is extremely well built. When I received the order, it was missing the straps but a quick message to the seller rectified the problem immediately. Would recommend to anyone wanting to make themselves vomit during a workout. Great Product!Solidly constructed and heavy. Unfortunately, I can't push it on grass, unless your grass is as smooth as a putting green. Because of its weight it tends to dig in to the ground, so I have to push it on concrete or some other hard surface. So I'm a little concerned that the runners will wear out eventually. Other than that, I like it.Slides great but started to rust on the third day but great for conditioning the legsBought this for my son and he loves it...great work out for Fire Fighting exercises. Stored on my covered patio and within a month it started rusting❗❗❗❗still a great product though. ?