We purchased 4 new Dollamur mats last year. We only use them for competition for a couple of reasons; they are a lot harder surface than most mats, and our practice mats are still in very good shape. I personally don't think I would want to practice on such a hard surface every day of the season. On the other hand, they are great for completion in my opinion. As far as the Velcro goes, I am very impressed with the strength of it. I don't have any worries at all about the mats coming apart. Will they be as strong in 10 years, I can't answer that but I will be surprised if they are not. The mats come in seven sections and unless your a heavyweight, it takes two kids to carry one section. Very convenient to set up and break down.