Ader Black Plyometric Box - Jump Training Platform for CrossFit, Gym & Home Workouts - Perfect for Plyometrics, Step-Ups & Agility Drills

I rarely write reviews.First, for the criticism. I ordered two of the 18 inch boxes. They were both dirty. You would think that they would clean the product before packing and shipping. However, that's no reason to give less than five stars.Now, this product is excellent. The set that I bought exceeded my expectations in every respect. The people that built these have a good understanding of the needs of users in the gym and a good understanding of manufacturing. The materials are solid and heavy. The welding is very solid. The rubber platform on top grips well. These things are designed for heavy use in the gym. They will withstand very heavy use.For me, they also double as chairs. They look better than the pictures. The product was even packed very well except for the dirt.